{"product_id":"rainbowfish-tropical-fish-uk-paskas-blue-eye","title":"Paska's Blue-Eye Rainbowfish - UK","description":"\u003cp\u003eIf you want a small, elegant shoaling fish that brings constant movement without turning a community aquarium into chaos, Paska's Blue-Eye is one of the best choices in \u003cstrong\u003etropical fish UK\u003c\/strong\u003e fishkeeping. \u003cem\u003ePseudomugil paskai\u003c\/em\u003e is a true \u003cstrong\u003eblue eye rainbowfish\u003c\/strong\u003e from Papua New Guinea, admired for its glowing blue eyes, warm yellow to orange fins, and lively display behaviour. Despite its tiny adult size of around 3-4 cm, this species has a big visual impact when kept as a proper group in a well-planted aquarium. For aquarists searching for \u003cstrong\u003eaquarium fish UK\u003c\/strong\u003e, \u003cstrong\u003eaquarium fish online UK\u003c\/strong\u003e, or a peaceful species for a nano community, Paska's Blue-Eye stands out because it combines colour, activity, and a gentle temperament.\u003c\/p\u003e\n\u003cp\u003eSee our detailed photos showing the fine body shape, bright eye shine, and finnage that make this species so popular among \u003cstrong\u003eaquarium rainbowfish UK\u003c\/strong\u003e keepers. This is not a fish for a bare, neglected tank; it thrives when its \u003cstrong\u003epaska's blue-eye tank setup\u003c\/strong\u003e, stable \u003cstrong\u003epaska's blue-eye water temperature\u003c\/strong\u003e, and group size are planned properly. With a lifespan of around 3 years, peaceful nature, and moderate care level, it suits fishkeepers who want something more refined than common livebearers. If you are comparing \u003cstrong\u003etropical fish UK freshwater\u003c\/strong\u003e options and want a shoaling species that looks special in a planted display, Paska's Blue-Eye is a rewarding pick.\u003c\/p\u003e\n\n\u003cdiv class=\"info-box\"\u003e\n  \u003ch4\u003e🔹 Quick Facts\u003c\/h4\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eScientific Name:\u003c\/strong\u003e \u003cem\u003ePseudomugil paskai\u003c\/em\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCare Level:\u003c\/strong\u003e Moderate\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMin Tank Size:\u003c\/strong\u003e 40 litres (about 9 gallons)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTemperature:\u003c\/strong\u003e 24-28°C (75-82°F)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003epH Range:\u003c\/strong\u003e 6.5-7.5\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eLifespan:\u003c\/strong\u003e Up to 3 years\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTemperament:\u003c\/strong\u003e Peaceful\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDiet:\u003c\/strong\u003e Omnivore\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"species-profile\"\u003e\n  \u003ch3\u003eClassification\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOrder:\u003c\/strong\u003e Atheriniformes\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFamily:\u003c\/strong\u003e Pseudomugilidae\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eGenus:\u003c\/strong\u003e \u003cem\u003ePseudomugil\u003c\/em\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003ePaska's Blue-Eye belongs to the blue-eye group of rainbowfishes rather than the larger Melanotaenia species many hobbyists first picture when they hear the word rainbowfish. That matters in the aquarium because its size, feeding style, and social behaviour are closer to other delicate blue-eyes than to a \u003cstrong\u003elake kutubu rainbowfish\u003c\/strong\u003e or \u003cstrong\u003ered rainbowfish\u003c\/strong\u003e. In the hobby, it is valued as a refined micro-community fish with beautiful display behaviour and a strong preference for planted, mature aquariums.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2 id=\"origin\"\u003eWhere Do Paska's Blue-Eye Come From? Natural Habitat Explained\u003c\/h2\u003e\n\u003cp\u003eIf you have ever asked \u003cstrong\u003ewhere do rainbowfish come from\u003c\/strong\u003e, \u003cstrong\u003ewhere do rainbow fish live\u003c\/strong\u003e, or \u003cstrong\u003ewhere do rainbowfish live\u003c\/strong\u003e, this species has a very specific answer. Paska's Blue-Eye comes from Papua New Guinea, especially the Fly River system. Its \u003cstrong\u003erainbowfish natural habitat\u003c\/strong\u003e includes slow-moving waterways, marginal vegetation, and shallow areas with plant cover. That natural setting explains why the fish feels most secure in an aquarium with dense planting, gentle flow, and open swimming lanes rather than a sparse tank with harsh current.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003erainbowfish habitat\u003c\/strong\u003e for this species is warm, clean, and often rich in fine-leaved plants or submerged roots. In nature, these fish spend much of their time in the upper to middle water layers, picking at tiny foods drifting in the water column. A good \u003cstrong\u003erainbowfish biotope aquarium\u003c\/strong\u003e for Paska's Blue-Eye would include dark substrate, floating cover, and fine plants that break up sight lines. While some keepers search terms like \u003cstrong\u003erainbowfish biotope\u003c\/strong\u003e or even wonder about \u003cstrong\u003erainbowfish in pond\u003c\/strong\u003e, this is not a fish for an outdoor setup in Britain. It is unsuitable for a \u003cstrong\u003etropical fish pond UK\u003c\/strong\u003e or \u003cstrong\u003etropical fish outdoor pond UK\u003c\/strong\u003e because UK temperatures are too unstable and too cold for long-term health.\u003c\/p\u003e\n\u003cp\u003eIn the wild, Paska's Blue-Eye feeds on tiny invertebrates, zooplankton, and microscopic foods. This gives us a strong clue about captive feeding: small, frequent meals suit them better than large pellets. For hobbyists interested in \u003cstrong\u003ewild tropical fish UK\u003c\/strong\u003e style displays, this species is ideal for a naturalistic planted tank that recreates a calm stream edge rather than an open river channel. Although it is not the same species as the famous \u003cstrong\u003elake kutubu rainbowfish\u003c\/strong\u003e, both belong to the wider rainbowfish conversation and show how diverse these fish can be in size and habitat.\u003c\/p\u003e\n\u003cdiv class=\"tip-box\"\u003e\n  \u003ch4\u003e💡 Expert Tip\u003c\/h4\u003e\n  \u003cp\u003eMimicking the natural habitat of Paska's Blue-Eye with gentle filtration, dark décor, floating plants, and a mature biofilm-rich aquarium often improves colour, feeding confidence, and courtship behaviour within days.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2 id=\"tank-setup\"\u003eHow to Set Up the Perfect Tank for Paska's Blue-Eye\u003c\/h2\u003e\n\u003cp\u003eOne of the most common customer questions is about \u003cstrong\u003epaska's blue-eye tank size\u003c\/strong\u003e and whether a tiny aquarium is enough. The official \u003cstrong\u003epaska's blue-eye minimum tank size\u003c\/strong\u003e is 40 litres, and that should be treated as a true minimum for a small group. In practice, a 45-60 litre aquarium gives much better stability, easier aquascaping, and more room for natural movement. If you are searching \u003cstrong\u003erainbowfish tank size\u003c\/strong\u003e or using an \u003cstrong\u003eaquarium fish calculator UK\u003c\/strong\u003e, remember that these fish are active midwater swimmers and should not be kept as a single specimen. A group of 8 or more is strongly recommended, so the tank must be planned around social needs, not just adult body length.\u003c\/p\u003e\n\u003cp\u003eFor anyone asking \u003cstrong\u003ehow many paska's blue-eye in a tank\u003c\/strong\u003e, a 40 litre aquarium should be a species-focused setup with 8 fish and very light additional stocking. In a 60 litre tank, you have more flexibility for a small peaceful community. If your search history includes \u003cstrong\u003e1 rainbow fish\u003c\/strong\u003e, \u003cstrong\u003e4 rainbow fish\u003c\/strong\u003e, or even \u003cstrong\u003e100 rainbow fish\u003c\/strong\u003e, the key point is that Paska's Blue-Eye is a shoaling species. Keeping one or four usually leads to shy behaviour and weaker displays. This answers another common question: \u003cstrong\u003eare rainbowfish schooling\u003c\/strong\u003e and \u003cstrong\u003eare rainbowfish schooling fish\u003c\/strong\u003e? Yes, this species is strongly social and does best in groups.\u003c\/p\u003e\n\n\u003ch3\u003eTank Size Requirements\u003c\/h3\u003e\n\u003cp\u003eA thoughtful \u003cstrong\u003epaska's blue-eye aquarium setup\u003c\/strong\u003e starts with footprint as much as volume. Choose a tank with horizontal swimming room, a tight-fitting lid, and space for plants around the edges. Their small size means the bioload is modest, but they are sensitive to poor water quality, so mature filtration matters more than simply cramming more fish into a nano tank. If you are comparing species and see searches like \u003cstrong\u003eturquoise rainbowfish tank size\u003c\/strong\u003e, remember that larger rainbowfish need much bigger aquariums than Paska's Blue-Eye.\u003c\/p\u003e\n\n\u003ch3\u003eWater Parameters\u003c\/h3\u003e\n\u003cp\u003eThe ideal \u003cstrong\u003epaska's blue-eye water parameters\u003c\/strong\u003e are stable rather than extreme. Aim for a \u003cstrong\u003epaska's blue-eye temperature\u003c\/strong\u003e of 24-28°C, with 25-26°C being a very comfortable everyday range. If you are asking \u003cstrong\u003ewhat temperature do rainbowfish like\u003c\/strong\u003e, this species prefers warm tropical conditions. For UK keepers searching \u003cstrong\u003etropical fish tank temperature UK\u003c\/strong\u003e, \u003cstrong\u003etropical fish tank temperature UK celsius\u003c\/strong\u003e, or \u003cstrong\u003etropical fish water temperature UK\u003c\/strong\u003e, the answer is simple: keep this fish in a heated aquarium, not an unheated room-temperature tank. Its preferred \u003cstrong\u003erainbowfish temperature\u003c\/strong\u003e range is warmer than many beginners expect.\u003c\/p\u003e\n\u003cp\u003eMaintain pH between 6.5 and 7.5, with moderate hardness around 5-15 dGH. A stable \u003cstrong\u003epaska's blue-eye ph level\u003c\/strong\u003e is more important than chasing an exact number. The same applies to \u003cstrong\u003epaska's blue-eye water hardness\u003c\/strong\u003e; avoid dramatic swings. Weekly water changes of 25-30% help preserve the clean conditions this species needs.\u003c\/p\u003e\n\n\u003cdiv class=\"spec-grid\"\u003e\n  \u003cdiv class=\"spec-card\"\u003e\n    \u003cdiv class=\"spec-value\"\u003e24-28°C\u003c\/div\u003e\n    \u003cdiv class=\"spec-label\"\u003eTemperature\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"spec-card\"\u003e\n    \u003cdiv class=\"spec-value\"\u003e6.5-7.5\u003c\/div\u003e\n    \u003cdiv class=\"spec-label\"\u003epH\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"spec-card\"\u003e\n    \u003cdiv class=\"spec-value\"\u003e5-15 dGH\u003c\/div\u003e\n    \u003cdiv class=\"spec-label\"\u003eHardness\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"spec-card\"\u003e\n    \u003cdiv class=\"spec-value\"\u003e40L+\u003c\/div\u003e\n    \u003cdiv class=\"spec-label\"\u003eMinimum Tank\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eFiltration\u003c\/h3\u003e\n\u003cp\u003eCan \u003cstrong\u003etropical fish live without a filter\u003c\/strong\u003e? No, not if you want long-term success with Paska's Blue-Eye. And \u003cstrong\u003ehow long can tropical fish live without a filter\u003c\/strong\u003e is the wrong question for a delicate species like this. Use a gentle, mature sponge filter or a small internal filter with diffuse flow. They dislike being blasted around the tank, but they still need oxygen-rich, clean water. A filter that turns the tank over around 4-6 times per hour is usually suitable if the current is softened by plants or spray bars.\u003c\/p\u003e\n\n\u003ch3\u003eSubstrate, Plants and Decor\u003c\/h3\u003e\n\u003cp\u003eA dark sand or fine gravel substrate helps this fish feel secure and improves colour contrast. A strong \u003cstrong\u003epaska's blue-eye in planted tank\u003c\/strong\u003e layout should include fine-leaved plants, mosses, and floating cover. Dense planting also supports microfauna that these fish naturally browse between meals. Good companion species and layout inspiration can be found by looking at other small rainbowfish such as \u003ca href=\"\/products\/tropical-fish-uk\"\u003ePacific Blue-Eye\u003c\/a\u003e, \u003ca href=\"\/products\/tropical-fish-uk\"\u003eSpotted Blue-Eye Rainbowfish\u003c\/a\u003e, and \u003ca href=\"\/products\/tropical-fish-uk\"\u003eThreadfin Rainbowfish\u003c\/a\u003e. If you want a larger contrast species for a bigger aquarium, compare them with \u003ca href=\"\/products\/tropical-fish-uk\"\u003eLake Kutubu Rainbowfish\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eFor décor, use wood, branchy hardscape, and open midwater lanes. Avoid sharp ornaments that can damage delicate fins. Lighting should be moderate, around 7-9 hours daily, with floating plants to soften brightness. Under balanced light, males show better display colour and more active sparring.\u003c\/p\u003e\n\n\u003cdiv class=\"info-box\"\u003e\n  \u003ch4\u003eQuick Setup Checklist\u003c\/h4\u003e\n  \u003cul\u003e\n    \u003cli\u003eTank of at least 40 litres, ideally 45-60 litres\u003c\/li\u003e\n    \u003cli\u003eHeater set to 24-28°C\u003c\/li\u003e\n    \u003cli\u003eGentle mature filtration with low to moderate flow\u003c\/li\u003e\n    \u003cli\u003eFine plants, moss, and floating cover\u003c\/li\u003e\n    \u003cli\u003eDark substrate for better colour contrast\u003c\/li\u003e\n    \u003cli\u003eGroup of 8+ fish, not a pair or single specimen\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tip-box\"\u003e\n  \u003ch4\u003e💡 Pro Tip\u003c\/h4\u003e\n  \u003cp\u003eAlways cycle the aquarium for 4-6 weeks before adding Paska's Blue-Eye. In a mature tank, they settle faster, feed more confidently, and show far less stress than in a newly filled aquarium.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2 id=\"feeding\"\u003eWhat Do Paska's Blue-Eye Eat? Complete Feeding Guide\u003c\/h2\u003e\n\u003cp\u003eMany buyers ask \u003cstrong\u003ewhat do rainbow fish eat\u003c\/strong\u003e, \u003cstrong\u003ewhat do rainbowfish eat\u003c\/strong\u003e, and \u003cstrong\u003ewhat does rainbowfish eat\u003c\/strong\u003e. Paska's Blue-Eye is an omnivore, but because of its tiny mouth, food size matters just as much as food type. In the wild, \u003cstrong\u003ewhat do rainbowfish eat in the wild\u003c\/strong\u003e? Mostly tiny crustaceans, insect larvae, zooplankton, and microscopic drifting foods. That means the best captive \u003cstrong\u003erainbowfish diet\u003c\/strong\u003e is based on very small, high-quality foods rather than large flakes or chunky pellets.\u003c\/p\u003e\n\u003cp\u003eA good \u003cstrong\u003epaska's blue-eye diet\u003c\/strong\u003e includes micro pellets, crushed flake, baby brine shrimp, cyclops, daphnia, and finely sized frozen foods. If you are wondering \u003cstrong\u003ewhat to feed rainbowfish\u003c\/strong\u003e, think variety and small particle size. Hobbyists often compare related species by searching \u003cstrong\u003ewhat do threadfin rainbowfish eat\u003c\/strong\u003e, \u003cstrong\u003ewhat does neon rainbowfish eat\u003c\/strong\u003e, or \u003cstrong\u003ewhat does boeseman's rainbowfish eat\u003c\/strong\u003e; the answer changes slightly with mouth size, but Paska's Blue-Eye definitely needs the finer end of the food spectrum.\u003c\/p\u003e\n\n\u003ch3\u003eStaple Foods\u003c\/h3\u003e\n\u003cp\u003eUse a quality micro pellet or finely crushed flake as the staple. This is often the easiest answer when customers ask for the \u003cstrong\u003ebest tropical fish food UK\u003c\/strong\u003e options for small rainbowfish. Feed only what the group can clear in about 30-60 seconds.\u003c\/p\u003e\n\n\u003ch3\u003eSupplemental Foods\u003c\/h3\u003e\n\u003cp\u003eSupplement with frozen cyclops, baby brine shrimp, or daphnia several times a week. These foods improve condition, encourage courtship, and help shy fish feed more naturally. For keepers who travel, an \u003cstrong\u003eautomatic tropical fish feeder UK\u003c\/strong\u003e model can work with micro granules, but test it first to avoid overfeeding.\u003c\/p\u003e\n\n\u003ch3\u003eTreats and Algae Questions\u003c\/h3\u003e\n\u003cp\u003ePeople often ask \u003cstrong\u003edo rainbowfish eat algae\u003c\/strong\u003e, \u003cstrong\u003edo rainbowfish eat plants\u003c\/strong\u003e, \u003cstrong\u003edo rainbowfish eat other fish\u003c\/strong\u003e, and \u003cstrong\u003edo rainbowfish eat shrimp\u003c\/strong\u003e. Paska's Blue-Eye is not an algae-control species, so do not buy it as one of your \u003cstrong\u003ealgae eating tropical fish UK\u003c\/strong\u003e solutions. It may pick at microscopic growth, but it will not replace proper maintenance. It does not normally damage plants. It also does not hunt fish, though it may eat tiny fry if given the chance. With shrimp, adults are often safe with larger shrimp, but shrimplets can be eaten.\u003c\/p\u003e\n\n\u003ctable class=\"comparison-table\"\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eTime\u003c\/th\u003e\n\u003cth\u003eFood\u003c\/th\u003e\n\u003cth\u003eAmount\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMorning\u003c\/td\u003e\n\u003ctd\u003eMicro pellet or crushed flake\u003c\/td\u003e\n\u003ctd\u003eVery small pinch, eaten in under 1 minute\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eEvening\u003c\/td\u003e\n\u003ctd\u003eFrozen cyclops, baby brine shrimp, or daphnia\u003c\/td\u003e\n\u003ctd\u003eSmall portion, no leftovers\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cdiv class=\"warning-box\"\u003e\n  \u003ch4\u003e⚠️ Feeding Warning\u003c\/h4\u003e\n  \u003cp\u003eOverfeeding causes ammonia spikes and water quality issues very quickly in small tanks. Because Paska's Blue-Eye is delicate, repeated overfeeding often leads to clamped fins, poor colour, and opportunistic disease.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"food-recommendation\"\u003e\n  \u003ca href=\"\/products\/tropical-fish-uk\"\u003eTry X Threadfin Rainbowfish as a companion species in similar feeding setups\u003c\/a\u003e\n  \u003cp\u003eThreadfins enjoy the same small live and frozen foods, making mixed rainbowfish displays easier to feed consistently.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"food-recommendation\"\u003e\n  \u003ca href=\"\/products\/tropical-fish-uk\"\u003eSee Pacific Blue-Eye for another small blue-eye rainbowfish option\u003c\/a\u003e\n  \u003cp\u003ePacific Blue-Eye suits aquarists who enjoy tiny active fish that thrive on micro foods and planted aquariums.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2 id=\"appearance\"\u003eWhat Does Paska's Blue-Eye Look Like? Colors, Patterns \u0026amp; Varieties\u003c\/h2\u003e\n\u003cp\u003ePaska's Blue-Eye is a slim, elegant fish reaching a typical \u003cstrong\u003epaska's blue-eye size\u003c\/strong\u003e of around 3-4 cm. The body is lightly built and semi-translucent with subtle warm tones, while the eyes show the bright reflective blue that gives the whole blue-eye group its name. The fins are the real highlight: males develop striking yellow to orange finnage that flashes beautifully during display behaviour.\u003c\/p\u003e\n\u003cp\u003eThis species is often searched simply as \u003cstrong\u003eblue eye rainbowfish\u003c\/strong\u003e, but it has a different look from larger rainbowfish species. If you are comparing \u003cstrong\u003epaska's blue-eye vs neon rainbowfish\u003c\/strong\u003e, Paska's Blue-Eye is finer built and more delicate. In \u003cstrong\u003epaska's blue-eye vs boesemani rainbowfish\u003c\/strong\u003e, the difference is even greater, as Boesemani are much larger and bolder. Searches like \u003cstrong\u003epaska's blue-eye or threadfin rainbowfish\u003c\/strong\u003e and \u003cstrong\u003epaska's blue-eye vs praecox rainbowfish\u003c\/strong\u003e are common because these species appeal to similar buyers, but Paska's Blue-Eye has a cleaner, subtler elegance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRainbowfish male vs female\u003c\/strong\u003e differences are clear once the fish mature. Males are more colourful, more active in display, and often show longer, brighter fins. Females are usually plainer and slightly fuller-bodied. For anyone searching \u003cstrong\u003epaska's blue-eye male vs female\u003c\/strong\u003e, the easiest clue is finnage and display behaviour. Good diet, dark substrate, and stable water help males show their best colour. While some hobbyists also search unrelated larger species like \u003cstrong\u003ered rainbowfish\u003c\/strong\u003e, Paska's Blue-Eye is chosen for finesse rather than sheer size or bulk colour.\u003c\/p\u003e\n\n\u003ch2 id=\"compatibility\"\u003eWhat Fish Can Live With Paska's Blue-Eye? Compatibility Guide\u003c\/h2\u003e\n\u003cp\u003eOne of the biggest reasons people choose this species is temperament. Customers often ask \u003cstrong\u003eare rainbowfish aggressive\u003c\/strong\u003e and \u003cstrong\u003eare rainbowfish peaceful\u003c\/strong\u003e. Paska's Blue-Eye is definitely on the peaceful end, though males will spar and display among themselves. That behaviour is normal and usually harmless in a proper group. This makes it one of the \u003cstrong\u003ebest rainbowfish for community tank\u003c\/strong\u003e setups where tank mates are equally gentle and not large enough to intimidate or eat them.\u003c\/p\u003e\n\u003cp\u003eWhen planning \u003cstrong\u003epaska's blue-eye compatible fish\u003c\/strong\u003e, think calm, small, and non-nippy. Good \u003cstrong\u003erainbow fish tankmates\u003c\/strong\u003e include other blue-eyes and delicate community species that share warm, clean water. Suitable examples from our range include \u003ca href=\"\/products\/tropical-fish-uk\"\u003ePacific Blue-Eye\u003c\/a\u003e, \u003ca href=\"\/products\/tropical-fish-uk\"\u003eSpotted Blue-Eye Rainbowfish\u003c\/a\u003e, \u003ca href=\"\/products\/tropical-fish-uk\"\u003eCelebes Rainbowfish\u003c\/a\u003e, \u003ca href=\"\/products\/tropical-fish-uk\"\u003ex Threadfin Rainbowfish Iriatherina Werneri TROPICAL\u003c\/a\u003e, and \u003ca href=\"\/products\/tropical-fish-uk\"\u003eDwarf Rainbowfish\u003c\/a\u003e. In larger peaceful aquariums, experienced keepers may also compare them with \u003ca href=\"\/products\/tropical-fish-uk\"\u003eLake Kutubu Rainbowfish\u003c\/a\u003e, though tank size and scale must be considered carefully.\u003c\/p\u003e\n\n\u003ch3\u003eSpecies to Avoid\u003c\/h3\u003e\n\u003cp\u003eIf you are wondering \u003cstrong\u003ewhat tropical fish are aggressive\u003c\/strong\u003e, avoid fin-nippers, boisterous barbs, most large cichlids, and any fish big enough to view Paska's Blue-Eye as food. Questions like \u003cstrong\u003eare boesemani rainbow fish aggressive\u003c\/strong\u003e come up often; they are not usually aggressive in the cichlid sense, but they are much larger and more forceful feeders, so they can overwhelm tiny blue-eyes. For the same reason, \u003cstrong\u003ecan rainbowfish live with angelfish\u003c\/strong\u003e is usually not ideal for this species. \u003cstrong\u003eCan rainbowfish live with tiger barbs\u003c\/strong\u003e? Not recommended. \u003cstrong\u003eCan rainbowfish live with goldfish\u003c\/strong\u003e? No, due to temperature and temperament mismatch.\u003c\/p\u003e\n\n\u003ch3\u003eCommunity Tank Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eCan rainbowfish and guppies live together\u003c\/strong\u003e and \u003cstrong\u003ecan rainbowfish live with guppies\u003c\/strong\u003e? Sometimes yes, if the guppies are not overly boisterous and the tank is warm, clean, and well planted. \u003cstrong\u003eCan rainbowfish live with neon tetras\u003c\/strong\u003e? Often yes in a peaceful warm community, though feeding competition should be monitored. \u003cstrong\u003eCan rainbowfish live with shrimp\u003c\/strong\u003e? Adult shrimp and snails are often fine, but tiny shrimplets may be eaten. This is also why \u003cstrong\u003efish compatible with rainbow fish\u003c\/strong\u003e should be chosen by mouth size and temperament, not just temperature alone.\u003c\/p\u003e\n\u003cp\u003eFor buyers building a \u003cstrong\u003ecommunity tropical fish UK\u003c\/strong\u003e aquarium, Paska's Blue-Eye works best in a carefully stocked planted tank, not a random mixed setup. It is also worth noting that \u003cstrong\u003epaska's blue-eye with other fish\u003c\/strong\u003e works best when the group of blue-eyes is established first, so they feel secure before more outgoing species are added.\u003c\/p\u003e\n\n\u003ctable class=\"comparison-table\"\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecies\u003c\/th\u003e\n\u003cth\u003eCompatible?\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003ca href=\"\/products\/tropical-fish-uk\"\u003ePacific Blue-Eye\u003c\/a\u003e\u003c\/td\u003e\n      \u003ctd\u003e✅ Yes\u003c\/td\u003e\n      \u003ctd\u003eSimilar size, peaceful nature, and planted tank preferences.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003ca href=\"\/products\/tropical-fish-uk\"\u003ex Threadfin Rainbowfish Iriatherina Werneri TROPICAL\u003c\/a\u003e\u003c\/td\u003e\n      \u003ctd\u003e✅ Yes\u003c\/td\u003e\n      \u003ctd\u003eExcellent visual match in calm, warm aquariums with gentle flow.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eTiger Barbs\u003c\/td\u003e\n      \u003ctd\u003e❌ Avoid\u003c\/td\u003e\n      \u003ctd\u003eToo nippy and stressful for delicate fins and shy feeding behaviour.\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cdiv class=\"tip-box\"\u003e\n  \u003ch4\u003e💡 Compatibility Tip\u003c\/h4\u003e\n  \u003cp\u003eAlways quarantine new arrivals for 2-4 weeks before adding them to a blue-eye community. Small rainbowfish are hardy enough for a mature tank, but they are poor candidates for absorbing the stress of sudden disease introduction.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2 id=\"breeding\"\u003eHow to Breed Paska's Blue-Eye: Complete Breeding Guide\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePaska's blue-eye breeding\u003c\/strong\u003e is very achievable for prepared aquarists, though it is better described as moderate than beginner-easy. If you are asking \u003cstrong\u003eare rainbowfish easy to breed\u003c\/strong\u003e, the answer is: some are, but fry rearing is the real challenge. Adult fish often spawn readily in the right environment. Understanding \u003cstrong\u003ehow do rainbowfish breed\u003c\/strong\u003e helps a lot: they scatter adhesive eggs among fine plants or spawning mops, often over several days rather than in one large event.\u003c\/p\u003e\n\n\u003ch3\u003eBreeding Setup\u003c\/h3\u003e\n\u003cp\u003eA separate 20-30 litre breeding tank works well, with gentle aeration, a sponge filter, and fine-leaved plants or mops. Condition the adults with small live and frozen foods. This is the heart of any good \u003cstrong\u003epaska's blue-eye feeding guide\u003c\/strong\u003e for breeding condition. Warm, clean water and frequent small water changes often trigger spawning.\u003c\/p\u003e\n\n\u003ch3\u003eSpawning Behaviour\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eHow often do rainbow fish breed\u003c\/strong\u003e? In good conditions, they may spawn daily or near-daily over an extended period. Males display to females with flared fins and quick dashes through plants. \u003cstrong\u003eRainbowfish breeding\u003c\/strong\u003e behaviour is subtle but beautiful, especially in the morning.\u003c\/p\u003e\n\n\u003ch3\u003eEgg Care and Hatching\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat do rainbowfish eggs look like\u003c\/strong\u003e? The \u003cstrong\u003erainbowfish eggs\u003c\/strong\u003e are tiny, clear to slightly opaque, and adhesive, usually attached to plant leaves or mops by fine filaments. \u003cstrong\u003eHow long for rainbowfish eggs to hatch\u003c\/strong\u003e? Usually around 10-14 days depending on temperature. Remove eggs or adults, because \u003cstrong\u003ewill rainbowfish eat fry\u003c\/strong\u003e and eggs if given the chance? Yes, many will. The same logic applies if you wonder \u003cstrong\u003ewill rainbowfish eat guppy fry\u003c\/strong\u003e; small fry are potential food.\u003c\/p\u003e\n\n\u003ch3\u003eFry Care\u003c\/h3\u003e\n\u003cp\u003eNewly hatched \u003cstrong\u003erainbowfish fry\u003c\/strong\u003e are tiny and need infusoria, vinegar eels, or other microscopic foods before moving onto baby brine shrimp and powdered fry foods. Clean water is critical, but avoid large sudden water changes. Many losses in \u003cstrong\u003etropical fish breeders UK\u003c\/strong\u003e projects happen because fry are overfed or exposed to unstable water.\u003c\/p\u003e\n\u003cp\u003eSome hobbyists search \u003cstrong\u003erainbowfish eggs for sale\u003c\/strong\u003e or browse \u003cstrong\u003etropical fish breeds UK\u003c\/strong\u003e to find breeding projects, but with Paska's Blue-Eye, raising your own from a settled adult group is often the most satisfying route.\u003c\/p\u003e\n\n\u003cdiv class=\"tip-box\"\u003e\n  \u003ch4\u003eAdvanced Breeding Tip\u003c\/h4\u003e\n  \u003cp\u003eRotate two or three spawning mops and remove one every day or two to a separate hatching container. This prevents egg predation and lets you stagger fry batches, making feeding and grow-out much easier.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2 id=\"comparison\"\u003ePaska's Blue-Eye vs Similar Species: Which Should You Choose?\u003c\/h2\u003e\n\u003cp\u003eComparing similar fish helps avoid disappointment. Many aquarists searching \u003cstrong\u003epaska's blue-eye care guide\u003c\/strong\u003e are also comparing other rainbowfish to find the right fit for tank size, feeding style, and community plans. Paska's Blue-Eye is best for aquarists who want a tiny, peaceful, planted-tank species rather than a larger open-water rainbowfish.\u003c\/p\u003e\n\n\u003ctable class=\"comparison-table\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003ePaska's Blue-Eye\u003c\/th\u003e\n\u003cth\u003eThreadfin Rainbowfish\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMax Size\u003c\/td\u003e\n\u003ctd\u003e4 cm\u003c\/td\u003e\n\u003ctd\u003e5 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCare Level\u003c\/td\u003e\n\u003ctd\u003eModerate\u003c\/td\u003e\n\u003ctd\u003eModerate\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTemperature\u003c\/td\u003e\n\u003ctd\u003e24-28°C\u003c\/td\u003e\n\u003ctd\u003e24-29°C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePrice\u003c\/td\u003e\n\u003ctd\u003e£11.61\u003c\/td\u003e\n\u003ctd\u003eVaries\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBest For\u003c\/td\u003e\n\u003ctd\u003eSmall planted peaceful tanks\u003c\/td\u003e\n\u003ctd\u003eElegant display communities with calm flow\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ctable class=\"comparison-table\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003ePaska's Blue-Eye\u003c\/th\u003e\n\u003cth\u003eBoesemani\/Praecox Type Rainbowfish\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTank Need\u003c\/td\u003e\n\u003ctd\u003e40L minimum\u003c\/td\u003e\n\u003ctd\u003eMuch larger aquarium needed\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTemperament\u003c\/td\u003e\n\u003ctd\u003eVery peaceful\u003c\/td\u003e\n\u003ctd\u003ePeaceful but stronger, faster feeders\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eLook\u003c\/td\u003e\n\u003ctd\u003eDelicate blue-eye with yellow fins\u003c\/td\u003e\n\u003ctd\u003eHeavier-bodied classic rainbowfish\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBest For\u003c\/td\u003e\n\u003ctd\u003eNano to small community tanks\u003c\/td\u003e\n\u003ctd\u003eMedium to large display aquariums\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cp\u003eIf you are deciding between \u003cstrong\u003epaska's blue-eye vs neon rainbowfish\u003c\/strong\u003e, \u003cstrong\u003epaska's blue-eye vs boesemani rainbowfish\u003c\/strong\u003e, \u003cstrong\u003epaska's blue-eye or threadfin rainbowfish\u003c\/strong\u003e, or \u003cstrong\u003epaska's blue-eye vs praecox rainbowfish\u003c\/strong\u003e, choose Paska's Blue-Eye when space is limited and you want subtle beauty, active shoaling, and a fish that suits a refined planted aquascape. Choose larger rainbowfish only if your tank is much bigger and your stocking plan is built around their size and energy.\u003c\/p\u003e\n\n\u003ch2 id=\"health\"\u003eCommon Health Problems in Paska's Blue-Eye \u0026amp; How to Prevent Them\u003c\/h2\u003e\n\u003cp\u003ePaska's Blue-Eye is not especially disease-prone, but it is sensitive to poor conditions. The best prevention is stable water, careful feeding, and quarantine. Healthy fish show clear eyes, open fins, active midwater swimming, and eager feeding. If colour fades, fins clamp, or the fish hide constantly, review water quality first.\u003c\/p\u003e\n\u003cp\u003eCommon issues include stress-related bacterial problems, external parasites such as ich, and wasting caused by chronic underfeeding or internal parasites. Because this species is small, symptoms can progress quickly. Good \u003cstrong\u003ehow to care for paska's blue-eye\u003c\/strong\u003e practice means acting early rather than waiting several days to see if the fish improves on its own.\u003c\/p\u003e\n\u003cp\u003eSome buyers search confusing terms like \u003cstrong\u003eare rainbowfish cichlids\u003c\/strong\u003e or ask about \u003cstrong\u003erainbowfish with cichlids\u003c\/strong\u003e. They are not cichlids, and mixing Paska's Blue-Eye with most cichlids is poor practice due to stress and predation risk. Search phrases such as \u003cstrong\u003erainbowfish for sale UK healthcare\u003c\/strong\u003e, \u003cstrong\u003ewhich rainbowfish for sale UK 2024\u003c\/strong\u003e, \u003cstrong\u003ewhich rainbowfish for sale UK online\u003c\/strong\u003e, and \u003cstrong\u003ewhich rainbowfish for sale UK price\u003c\/strong\u003e often reflect buyers trying to balance cost with survivability. In reality, health depends far more on source quality, quarantine, and your setup than on chasing the lowest price.\u003c\/p\u003e\n\u003cp\u003eFor treatment, use a separate hospital tank where possible. Raise aeration during medication, monitor appetite, and keep ammonia and nitrite at zero. Avoid random medication stacking. Small fish can be stressed by overdosing, so always calculate volume accurately. This matters whether you are browsing \u003cstrong\u003ewhich rainbowfish for sale UK for sale\u003c\/strong\u003e listings or comparing sellers that claim \u003cstrong\u003ewhich rainbowfish for sale UK real\u003c\/strong\u003e stock availability.\u003c\/p\u003e\n\n\u003cdiv class=\"warning-box\"\u003e\n  \u003ch4\u003e⚠️ Health Warning\u003c\/h4\u003e\n  \u003cp\u003eNEVER use copper-based medications with invertebrates in the same system. Copper can be lethal to shrimp and other sensitive tank mates, and small rainbowfish can also react badly to unnecessarily strong treatments.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"info-box\"\u003e\n  \u003ch4\u003eQuarantine Protocol\u003c\/h4\u003e\n  \u003cul\u003e\n    \u003cli\u003eUse a separate heated tank for 2-4 weeks\u003c\/li\u003e\n    \u003cli\u003eObserve feeding, respiration, and fin condition daily\u003c\/li\u003e\n    \u003cli\u003eTest ammonia and nitrite regularly\u003c\/li\u003e\n    \u003cli\u003eOnly move fish to the display tank once fully settled and symptom-free\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2 id=\"behavior\"\u003eUnderstanding Paska's Blue-Eye Behavior in the Aquarium\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePaska's blue-eye behaviour\u003c\/strong\u003e is one of the main reasons people fall in love with this species. They are active but not frantic, social but not pushy, and constantly visible when kept in the right numbers. This species spends most of its time in the middle and upper levels, weaving through plants and making short display runs.\u003c\/p\u003e\n\u003cp\u003eBecause \u003cstrong\u003eare rainbowfish schooling fish\u003c\/strong\u003e is such a common question, it is worth repeating that Paska's Blue-Eye should be kept in a proper group. In a shoal, males display to one another, females feed more confidently, and the whole group uses the tank more naturally. This is why \u003cstrong\u003epaska's blue-eye for beginners\u003c\/strong\u003e can be true only if the beginner is willing to provide a mature planted tank and enough individuals.\u003c\/p\u003e\n\u003cp\u003eIn the right setup, \u003cstrong\u003epaska's blue-eye with other fish\u003c\/strong\u003e works well, but their behaviour is best when they are not overshadowed by larger, faster species. Floating plants, dimmer zones, and fine décor encourage natural movement. A settled group becomes surprisingly bold and often greets feeding time at the front glass.\u003c\/p\u003e\n\n\u003ch2 id=\"why-buy\"\u003eWhy Buy from Tropical Fish Co?\u003c\/h2\u003e\n\u003cp\u003eWhen people search \u003cstrong\u003ebuy live fish online UK\u003c\/strong\u003e, \u003cstrong\u003ebest place to buy tropical fish online UK\u003c\/strong\u003e, \u003cstrong\u003elive fish for sale UK\u003c\/strong\u003e, or \u003cstrong\u003ebuy aquarium fish online UK\u003c\/strong\u003e, they are usually trying to answer one question: will the fish arrive healthy and true to description? With Paska's Blue-Eye, that matters even more because it is a small, delicate species that should never be rushed from import bag to sales tank to courier box without proper settling time.\u003c\/p\u003e\n\u003cp\u003eOur approach is built around the needs of this species. We hold and assess fish before dispatch, monitor feeding response, and make sure the group is stable before listing stock as ready. That is far more useful than vague claims about quality. For buyers comparing \u003cstrong\u003etropical fish UK for sale\u003c\/strong\u003e, \u003cstrong\u003erainbowfish for sale UK\u003c\/strong\u003e, \u003cstrong\u003erainbowfish for sale\u003c\/strong\u003e, or wanting to \u003cstrong\u003ebuy rainbowfish UK\u003c\/strong\u003e, the difference is in preparation: fish that are already feeding well and acclimated to aquarium life travel better and settle faster.\u003c\/p\u003e\n\u003cp\u003eFor \u003cstrong\u003eaquarium fish delivery UK\u003c\/strong\u003e, fish are packed in insulated boxes with appropriate bagging, oxygen, and seasonal heat protection when needed. This is especially important for fish that need stable warmth rather than fluctuating room temperatures. If you are comparing \u003cstrong\u003eaquarium fish shop UK\u003c\/strong\u003e, \u003cstrong\u003eaquarium fish in UK\u003c\/strong\u003e, \u003cstrong\u003eaquarium fish wholesale UK\u003c\/strong\u003e, or browsing \u003cstrong\u003eaquarium fish price UK\u003c\/strong\u003e, remember that the cheapest listing is not always the best value if fish have not been conditioned properly.\u003c\/p\u003e\n\u003cp\u003eCustomers also ask versions of \u003cstrong\u003ebuy tropical fish online UK free delivery\u003c\/strong\u003e, \u003cstrong\u003ebuy live fish online UK free delivery\u003c\/strong\u003e, \u003cstrong\u003eare rainbowfish for sale UK legal\u003c\/strong\u003e, \u003cstrong\u003eare rainbowfish for sale UK legit\u003c\/strong\u003e, and \u003cstrong\u003eare rainbowfish for sale UK online\u003c\/strong\u003e. The practical answer is to buy from a retailer that clearly identifies species, provides care information, and packs fish professionally for UK transit. Order your Paska's Blue-Eye today with confidence if you want a peaceful, eye-catching shoal for a planted tropical display.\u003c\/p\u003e\n\n\u003cdiv class=\"care-highlight\"\u003e\n  \u003ch4\u003eWhy Choose Tropical Fish Co for Paska's Blue-Eye\u003c\/h4\u003e\n  \u003cul\u003e\n    \u003cli\u003eFish are assessed for feeding response and group stability before dispatch, which is especially important for tiny blue-eye rainbowfish.\u003c\/li\u003e\n    \u003cli\u003eCare guidance focuses on the real needs of \u003cem\u003ePseudomugil paskai\u003c\/em\u003e: group size, gentle filtration, and mature planted setups.\u003c\/li\u003e\n    \u003cli\u003eProfessional insulated packing helps protect this warm-water species during UK transport.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eYou Might Also Like\u003c\/h2\u003e\n\u003cp\u003eBuild a more natural small rainbowfish display by pairing Paska's Blue-Eye ideas with other peaceful species from our collection. The \u003ca href=\"\/products\/tropical-fish-uk\"\u003ePacific Blue-Eye\u003c\/a\u003e is a great option for keepers who love tiny active shoalers. The \u003ca href=\"\/products\/tropical-fish-uk\"\u003eSpotted Blue-Eye Rainbowfish\u003c\/a\u003e offers another delicate planted-tank choice, while \u003ca href=\"\/products\/tropical-fish-uk\"\u003eCelebes Rainbowfish\u003c\/a\u003e suits aquarists wanting a slightly different rainbowfish look. For a graceful display fish, consider \u003ca href=\"\/products\/tropical-fish-uk\"\u003ex Threadfin Rainbowfish Iriatherina Werneri TROPICAL\u003c\/a\u003e. If you are planning a larger rainbowfish aquarium, compare adult size and temperament with \u003ca href=\"\/products\/tropical-fish-uk\"\u003eRed Rainbowfish\u003c\/a\u003e or \u003ca href=\"\/products\/tropical-fish-uk\"\u003eLake Kutubu Rainbowfish\u003c\/a\u003e before stocking.\u003c\/p\u003e","brand":"Tropical Fish Co","offers":[{"title":"Default Title","offer_id":57379727245647,"sku":"5164","price":16.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/1408\/6735\/files\/pseudomugil-paskai-natural-aquarium-5164.webp?v=1777850185","url":"https:\/\/tropical-fish-co.myshopify.com\/products\/rainbowfish-tropical-fish-uk-paskas-blue-eye","provider":"Tropical Fish Co","version":"1.0","type":"link"}