{"product_id":"blue-mary-cherry-shrimp-freshwater-sale-uk","title":"Blue Mary Shrimp (Neocaridina davidi) - UK","description":"\u003cp\u003eThe Blue Mary Shrimp is one of the most eye-catching choices in the \u003cstrong\u003efreshwater shrimp UK\u003c\/strong\u003e hobby because its colour appears soft, translucent and blue from the body tissue rather than looking like a flat painted shell. This elegant blue form of \u003cem\u003eNeocaridina davidi\u003c\/em\u003e stays small at around 2.5-3 cm, lives for roughly 1-2 years, and suits aquarists who want peaceful, active scavengers for a nano tank or planted community. If you are looking for \u003cstrong\u003eaquarium shrimp UK\u003c\/strong\u003e keepers can enjoy without specialist acidic water, Blue Marys are a smart option. They are often chosen by people searching for \u003cstrong\u003efreshwater aquarium shrimp uk\u003c\/strong\u003e, \u003cstrong\u003elive aquarium shrimp for sale uk\u003c\/strong\u003e, or \u003cstrong\u003echerry shrimp for sale uk\u003c\/strong\u003e because they combine unusual colour with the forgiving nature of Neocaridina. Their \u003cstrong\u003eblue mary shrimp tank requirements\u003c\/strong\u003e are straightforward, their \u003cstrong\u003eblue mary shrimp ideal conditions\u003c\/strong\u003e are easy to maintain, and they are excellent for a \u003cstrong\u003efreshwater shrimp aquarium\u003c\/strong\u003e with mosses, wood and leaf litter. See our detailed photos showing the clean blue tone, body transparency and female saddle development. For anyone comparing \u003cstrong\u003eaquarium shrimp for sale uk\u003c\/strong\u003e listings, Blue Mary Shrimp stand out as a colourful, peaceful and rewarding species that can graze algae, breed readily and bring constant movement to a well-run shrimp tank.\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\u003eNeocaridina davidi\u003c\/em\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCare Level:\u003c\/strong\u003e Easy to moderate\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMin Tank Size:\u003c\/strong\u003e 20 litres (about 5.3 gallons)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTemperature:\u003c\/strong\u003e 18-28°C (64-82°F)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003epH Range:\u003c\/strong\u003e 6.5-8.0\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eLifespan:\u003c\/strong\u003e Up to 2 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 Decapoda\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFamily:\u003c\/strong\u003e Atyidae\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eGenus:\u003c\/strong\u003e \u003cem\u003eNeocaridina\u003c\/em\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003eBlue Mary Shrimp are a selectively bred colour form of \u003cem\u003eNeocaridina davidi\u003c\/em\u003e, the same species behind many popular cherry shrimp lines. In the aquarium hobby, they sit alongside other hardy Neocaridina varieties rather than specialist Caridina such as crystal bee shrimp. That makes them especially appealing to fishkeepers who want reliable colour, simple care and regular breeding in ordinary community-friendly freshwater conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2 id=\"origin\"\u003eWhere Do Blue Mary Shrimp Come From? Natural Habitat Explained\u003c\/h2\u003e\n\u003cp\u003eAlthough Blue Mary Shrimp sold in the hobby are captive-bred, their species traces back to East Asia, especially Taiwan and nearby regions where \u003cem\u003eNeocaridina davidi\u003c\/em\u003e occurs in slow-moving inland waters. In the wild, relatives of these shrimp inhabit ponds, drainage channels, streams, lakes and vegetated margins of rivers. That is why hobbyists researching \u003cstrong\u003efreshwater shrimp uk rivers\u003c\/strong\u003e, \u003cstrong\u003ewild freshwater shrimp uk\u003c\/strong\u003e or \u003cstrong\u003enative freshwater shrimp uk\u003c\/strong\u003e often compare local species with Neocaridina, but Blue Marys are not a \u003cstrong\u003euk native freshwater shrimp\u003c\/strong\u003e. They are a domesticated aquarium strain bred for colour.\u003c\/p\u003e\n\u003cp\u003eNatural habitats are rich in biofilm, decaying leaves, algae films, soft sediments and submerged roots. Shrimp spend most of the day grazing on microscopic food rather than chasing large prey. This explains why a mature tank works better than a sterile one. In a well-aged setup, they pick continuously at surfaces, mosses and wood, just as they would in ponds and stream edges.\u003c\/p\u003e\n\u003cp\u003eMany buyers ask whether they can be kept in outdoor systems such as a \u003cstrong\u003echerry shrimp uk pond\u003c\/strong\u003e or \u003cstrong\u003efreshwater shrimp in pond uk\u003c\/strong\u003e arrangement. In warm months, some keepers do maintain Neocaridina outdoors, but in the UK climate this should be approached carefully. Sudden temperature swings, predators and winter cold make indoor aquariums safer and more predictable. Searches for \u003cstrong\u003efreshwater shrimp uk pond\u003c\/strong\u003e, \u003cstrong\u003efreshwater pond shrimp uk\u003c\/strong\u003e, \u003cstrong\u003epond shrimp for sale uk\u003c\/strong\u003e, \u003cstrong\u003eriver shrimp for sale uk\u003c\/strong\u003e and \u003cstrong\u003elive river shrimp for sale uk\u003c\/strong\u003e often refer to very different species, so it is important not to confuse ornamental Blue Marys with native amphipods or wild-collected shrimp.\u003c\/p\u003e\n\u003cp\u003eBecause Blue Mary Shrimp are selectively bred, their best colour appears in stable captive conditions rather than rough outdoor water. Their natural behaviour still reflects their ancestry: they prefer cover, graze constantly, moult regularly and feel safest in groups. A planted aquarium with moss, leaf litter and gentle flow is the closest practical match to their ancestral habitat.\u003c\/p\u003e\n\u003cdiv class=\"tip-box\"\u003e\n  \u003ch4\u003e💡 Expert Tip\u003c\/h4\u003e\n  \u003cp\u003eMimicking a natural shrimp habitat improves survival and colour. Use wood, moss, leaf litter and a mature biofilm-rich tank rather than an over-clean setup. Shrimp raised in stable, naturalistic environments usually moult more cleanly and show more confident daytime behaviour.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2 id=\"tank-setup\"\u003eHow to Set Up the Perfect Tank for Blue Mary Shrimp\u003c\/h2\u003e\n\u003cp\u003eThe best \u003cstrong\u003eblue mary shrimp aquarium setup\u003c\/strong\u003e starts with stability, not expensive gadgets. A 20-litre aquarium is the \u003cstrong\u003eblue mary shrimp minimum tank size\u003c\/strong\u003e, but 30-45 litres is easier to manage because water changes and feeding mistakes have less impact. For anyone planning a true colony, larger volume is a real advantage. Good \u003cstrong\u003eblue mary shrimp tank setup\u003c\/strong\u003e planning should focus on mature filtration, lots of surface area and gentle flow.\u003c\/p\u003e\n\u003ch3\u003eTank Size Requirements\u003c\/h3\u003e\n\u003cp\u003eThe official minimum is 20 litres, but realistic \u003cstrong\u003eblue mary shrimp tank requirements\u003c\/strong\u003e depend on your goals. A small group of 6-10 can live well in 20 litres, while a growing \u003cstrong\u003eblue mary shrimp colony\u003c\/strong\u003e will benefit from 30 litres or more. If you are wondering \u003cstrong\u003ehow many blue mary shrimp per tank\u003c\/strong\u003e, a lightly stocked 20-litre setup can start with 6-12 adults, then expand naturally as long as filtration and maintenance keep up.\u003c\/p\u003e\n\u003ch3\u003eWater Parameters\u003c\/h3\u003e\n\u003cp\u003eThe most reliable \u003cstrong\u003eblue mary shrimp water parameters\u003c\/strong\u003e are: temperature 18-28°C, pH 6.5-8.0 and hardness 4-15 dGH. In practice, the sweet spot for long-term health is usually 20-24°C, pH around neutral to slightly alkaline, and moderate mineral content. The ideal \u003cstrong\u003eblue mary shrimp water temperature\u003c\/strong\u003e for breeding and activity is often 21-24°C. If you are searching \u003cstrong\u003eblue mary shrimp temperature\u003c\/strong\u003e or \u003cstrong\u003eblue mary shrimp water hardness\u003c\/strong\u003e, remember that consistency matters more than chasing a single number.\u003c\/p\u003e\n\u003cp\u003eFor mineral balance, many keepers ask about \u003cstrong\u003eblue mary shrimp GH KH requirements\u003c\/strong\u003e. A moderate GH helps proper moulting and shell formation, while a small but measurable KH helps buffer pH swings. These are broad \u003cstrong\u003efreshwater shrimp requirements\u003c\/strong\u003e for Neocaridina in general. Compared with more delicate Caridina, Blue Marys tolerate a wider range, which is one reason they are popular with beginners.\u003c\/p\u003e\n\u003cdiv class=\"spec-grid\"\u003e\n  \u003cdiv class=\"spec-card\"\u003e\n    \u003cdiv class=\"spec-value\"\u003e18-28°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\"\u003e6.5-8.0\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\"\u003e4-15 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\"\u003e20 L+\u003c\/div\u003e\n    \u003cdiv class=\"spec-label\"\u003eMinimum Tank\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eFiltration\u003c\/h3\u003e\n\u003cp\u003eA sponge filter is usually best for shrimp tanks because it offers gentle circulation, huge grazing area and excellent safety for shrimplets. Small hang-on filters can work too, but always cover the intake with a pre-filter sponge. Shrimp dislike sudden current and do better when food and biofilm are not blasted away. If you are building a shrimp-focused setup, browse the wider \u003ca href=\"\/products\/freshwater-shrimp-uk\"\u003eFreshwater Shrimps\u003c\/a\u003e collection for ideas on species that suit similar systems.\u003c\/p\u003e\n\u003ch3\u003eSubstrate\u003c\/h3\u003e\n\u003cp\u003eOne of the most common questions is \u003cstrong\u003esand for shrimp tank\u003c\/strong\u003e or \u003cstrong\u003eshrimp gravel\u003c\/strong\u003e - which is better? For Blue Mary Shrimp, both can work. Fine dark gravel gives strong contrast and helps blue colour stand out. Fine sand is also useful because food stays on the surface where shrimp can find it easily. The best \u003cstrong\u003esand for shrimp tank\u003c\/strong\u003e is inert, clean and not sharp. A depth of 2-4 cm is enough for rooted plants and easy maintenance.\u003c\/p\u003e\n\u003ch3\u003ePlants \u0026amp; Decor\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003ePlants for shrimp tank\u003c\/strong\u003e setups are more than decoration. Mosses, subwassertang, floating plants, fine-leaved stems and epiphytes create feeding surfaces and shelter for babies. Blue Marys do especially well \u003cstrong\u003ewith plants\u003c\/strong\u003e, and a \u003cstrong\u003eblue mary shrimp in planted aquarium\u003c\/strong\u003e display often shows better behaviour and breeding. Good choices include Java moss, Christmas moss, Anubias nana, Bucephalandra, Java fern and floating Salvinia. Keepers comparing colour strains may also enjoy \u003ca href=\"\/products\/freshwater-shrimp-uk\"\u003eBlue Rili Shrimp\u003c\/a\u003e, \u003ca href=\"\/products\/freshwater-shrimp-uk\"\u003eOrange Rili Shrimp\u003c\/a\u003e or \u003ca href=\"\/products\/freshwater-shrimp-uk\"\u003eRed Rili Shrimp\u003c\/a\u003e in similarly planted displays, though colour lines should not be mixed if you want stable offspring colour.\u003c\/p\u003e\n\u003ch3\u003eLighting\u003c\/h3\u003e\n\u003cp\u003eModerate lighting for 6-8 hours daily is ideal. Strong light is fine if plant growth is the goal, but balance it with algae control and cover. Too much light in a bare tank can stress shrimp. In planted setups, lighting supports biofilm and grazing opportunities as well as plant health.\u003c\/p\u003e\n\u003cdiv class=\"info-box\"\u003e\n  \u003ch4\u003eQuick Setup Checklist\u003c\/h4\u003e\n  \u003cul\u003e\n    \u003cli\u003eCycle the tank fully before adding shrimp\u003c\/li\u003e\n    \u003cli\u003eUse a sponge filter or guarded intake\u003c\/li\u003e\n    \u003cli\u003eChoose inert sand or fine dark gravel\u003c\/li\u003e\n    \u003cli\u003eAdd mosses, wood and leaf litter\u003c\/li\u003e\n    \u003cli\u003eKeep temperature stable, ideally 20-24°C\u003c\/li\u003e\n    \u003cli\u003eTest GH, KH, pH and ammonia regularly\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 a shrimp tank for 4-6 weeks before adding stock. Mature biofilm is one of the biggest differences between a tank where shrimp merely survive and one where they thrive, moult well and breed regularly.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2 id=\"feeding\"\u003eWhat Do Blue Mary Shrimp Eat? Complete Feeding Guide\u003c\/h2\u003e\n\u003cp\u003eThe natural \u003cstrong\u003eblue mary shrimp diet\u003c\/strong\u003e is omnivorous and based mostly on tiny foods: biofilm, algae, detritus, decaying plant matter and microorganisms. In the aquarium, the best \u003cstrong\u003eblue mary shrimp feeding guide\u003c\/strong\u003e starts by understanding that shrimp are grazers first and pellet eaters second. A mature tank should provide background food all day, while prepared foods fill nutritional gaps.\u003c\/p\u003e\n\u003ch3\u003eStaple Foods\u003c\/h3\u003e\n\u003cp\u003eStaple foods include quality shrimp pellets, algae wafers, biofilm-support foods and botanicals such as Indian almond leaves. This is the foundation of a good \u003cstrong\u003efreshwater shrimp uk diet\u003c\/strong\u003e. Blanched spinach, courgette and nettle can be offered in small amounts. Shrimp also consume their moulted shells for minerals, so do not remove fresh moults unless they begin to foul.\u003c\/p\u003e\n\u003ch3\u003eSupplemental Foods\u003c\/h3\u003e\n\u003cp\u003eSupplemental protein can be offered once or twice weekly using shrimp-specific foods with insect meal, soybean hull, spirulina or tiny crustacean ingredients. Some keepers ask about \u003cstrong\u003ebrine shrimp eggs for sale uk\u003c\/strong\u003e or baby brine shrimp. Newly hatched brine shrimp can be useful for fish fry, but Blue Marys usually do better with dedicated shrimp foods and natural biofilm than with heavy meaty feeding.\u003c\/p\u003e\n\u003ch3\u003eTreats \u0026amp; Foods to Avoid\u003c\/h3\u003e\n\u003cp\u003eQuestions like \u003cstrong\u003ecan you eat freshwater shrimp\u003c\/strong\u003e, \u003cstrong\u003ecan you eat freshwater shrimp uk\u003c\/strong\u003e, \u003cstrong\u003eis shrimp for sale uk safe to eat\u003c\/strong\u003e or \u003cstrong\u003ewould shrimp for sale uk be safe to eat\u003c\/strong\u003e do appear online, but ornamental aquarium shrimp are sold as pets, not food. Likewise, unrelated searches such as \u003cstrong\u003ewhat do maryland blue crabs eat\u003c\/strong\u003e, \u003cstrong\u003eare maryland blue crabs healthy to eat\u003c\/strong\u003e or \u003cstrong\u003efrozen mantis shrimp for sale uk\u003c\/strong\u003e refer to very different animals and are not relevant to Blue Mary care. Avoid oily kitchen foods, salted vegetables, bread, and anything treated with copper-based medication.\u003c\/p\u003e\n\u003ch3\u003eFeeding Frequency \u0026amp; Portions\u003c\/h3\u003e\n\u003cp\u003ePeople often ask \u003cstrong\u003ehow often should you feed freshwater shrimp\u003c\/strong\u003e or \u003cstrong\u003ehow often to feed freshwater shrimp\u003c\/strong\u003e. In a mature tank, feed very lightly 3-5 times per week. In a newer tank with less biofilm, tiny daily portions may be better. The rule is simple: all prepared food should be mostly gone within 2-3 hours. If food remains overnight, reduce the amount.\u003c\/p\u003e\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\u003eBiofilm graze \/ algae in tank\u003c\/td\u003e\n\u003ctd\u003eNatural feeding\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eEvening\u003c\/td\u003e\n\u003ctd\u003eShrimp pellet or blanched veg\u003c\/td\u003e\n\u003ctd\u003eVery small portion, removed if uneaten\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv class=\"food-recommendation\"\u003e\n  \u003ca href=\"\/products\/freshwater-shrimp-uk\"\u003eCherry Shrimps Neocaridina Davidi Algae\u003c\/a\u003e\n  \u003cp\u003eA useful companion choice for keepers building a shrimp-focused algae-grazing setup with hardy Neocaridina lines.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"warning-box\"\u003e\n  \u003ch4\u003e⚠️ Feeding Warning\u003c\/h4\u003e\n  \u003cp\u003eOverfeeding is one of the fastest ways to crash a shrimp tank. Excess food rots, ammonia rises, oxygen falls and moulting problems often follow. Feed less than you think, especially in small aquariums.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2 id=\"appearance\"\u003eWhat Does Blue Mary Shrimp Look Like? Colors, Patterns \u0026amp; Varieties\u003c\/h2\u003e\n\u003cp\u003eIf you have ever asked \u003cstrong\u003ewhat is blue mary\u003c\/strong\u003e, the answer is a selectively bred blue form of cherry shrimp with a softer, more translucent look than heavily opaque blue lines. Adult size is usually 2.5-3 cm, with females larger and fuller-bodied than males. The body shows blue tissue colour through a semi-clear shell, which can range from pale sky blue to deeper steel-blue depending on genetics, diet, age and background.\u003c\/p\u003e\n\u003cp\u003eSearches such as \u003cstrong\u003ewhat color is mary blue\u003c\/strong\u003e or even \u003cstrong\u003ewhat color is marian blue\u003c\/strong\u003e reflect how people try to define this shade. In aquarium terms, Blue Mary is usually a cool translucent blue, sometimes with a slight smoky undertone. Females are more intensely coloured and may show a visible saddle behind the head when mature. Males are slimmer, often lighter and more transparent.\u003c\/p\u003e\n\u003cp\u003eCompared with standard \u003cstrong\u003echerry shrimp for sale\u003c\/strong\u003e strains, Blue Mary offers a calmer, more glassy look. It is different from Blue Dream, which is often more solid and opaque. It is also distinct from Blue Rili, which has clear body sections. If you like comparing colour forms, take a look at \u003ca href=\"\/products\/freshwater-shrimp-uk\"\u003eSuper Red Sakura Shrimp\u003c\/a\u003e, \u003ca href=\"\/products\/freshwater-shrimp-uk\"\u003eOrange Sakura Shrimp\u003c\/a\u003e and \u003ca href=\"\/products\/freshwater-shrimp-uk\"\u003eRed Sakura Shrimp\u003c\/a\u003e to see how body opacity and pigment coverage vary across Neocaridina lines.\u003c\/p\u003e\n\u003cp\u003eTo improve colour, use dark substrate, stable minerals, moderate feeding and a planted environment. Our photos show the translucent blue effect clearly, especially on mature females viewed against dark moss and wood.\u003c\/p\u003e\n\n\u003ch2 id=\"compatibility\"\u003eWhat Fish Can Live With Blue Mary Shrimp? Compatibility Guide\u003c\/h2\u003e\n\u003cp\u003eOne of the biggest questions for new keepers is \u003cstrong\u003ewhat can live with freshwater shrimp\u003c\/strong\u003e. Blue Marys are peaceful, non-territorial and among the \u003cstrong\u003ebest shrimp for community tank\u003c\/strong\u003e setups when tank mates are chosen carefully. The main risk is not aggression from the shrimp, but predation from fish. Even small fish may eat baby shrimp.\u003c\/p\u003e\n\u003ch3\u003eIdeal Tank Mates\u003c\/h3\u003e\n\u003cp\u003eThe safest \u003cstrong\u003eblue mary shrimp tank mates\u003c\/strong\u003e are other peaceful invertebrates and tiny, non-predatory fish. Snails are excellent companions, so the common question about \u003cstrong\u003eshrimp and snails\u003c\/strong\u003e has an easy answer: yes, they usually work very well together. Nerite snails, ramshorns and mystery snails share similar needs and help with cleanup without threatening shrimp.\u003c\/p\u003e\n\u003cp\u003eAmong fish, Otocinclus are one of the best options once the tank is mature. Very small rasboras can work in larger planted tanks, though some shrimplet losses should be expected. If you want to compare Neocaridina colour lines in similar setups, \u003ca href=\"\/products\/freshwater-shrimp-uk\"\u003eBlue Rili Shrimp\u003c\/a\u003e, \u003ca href=\"\/products\/freshwater-shrimp-uk\"\u003eOrange Rili Shrimp\u003c\/a\u003e, \u003ca href=\"\/products\/freshwater-shrimp-uk\"\u003eRed Rili Shrimp\u003c\/a\u003e and \u003ca href=\"\/products\/freshwater-shrimp-uk\"\u003eSuper Red Sakura Shrimp\u003c\/a\u003e all share similar broad care patterns.\u003c\/p\u003e\n\u003ch3\u003eSpecies to Avoid\u003c\/h3\u003e\n\u003cp\u003eBlue Mary Shrimp are not truly \u003cstrong\u003eblue mary shrimp safe with fish\u003c\/strong\u003e if those fish are large enough to hunt them. Avoid cichlids, puffers, loaches, most barbs, crayfish and larger gouramis. Even “peaceful” fish may snack on shrimplets. This is why shrimp-only or shrimp-first aquariums are best if breeding matters.\u003c\/p\u003e\n\u003ch3\u003eCommunity Tank Examples\u003c\/h3\u003e\n\u003cp\u003eIn a 30-litre planted shrimp tank, keep 10-15 Blue Mary Shrimp with snails only for best breeding results. In a 60-litre heavily planted community, a group of Blue Marys can coexist with Otocinclus and a small shoal of micro rasboras if you provide moss thickets and leaf litter. That makes them a good answer for aquarists searching \u003cstrong\u003ehow to care for blue mary shrimp\u003c\/strong\u003e, \u003cstrong\u003eblue mary shrimp care guide\u003c\/strong\u003e or \u003cstrong\u003echerry shrimp care uk\u003c\/strong\u003e advice for mixed tanks.\u003c\/p\u003e\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\/freshwater-shrimp-uk\"\u003eBlue Rili Shrimp\u003c\/a\u003e\u003c\/td\u003e\n      \u003ctd\u003e⚠️ Caution\u003c\/td\u003e\n      \u003ctd\u003eSimilar care, but mixing colour lines can lead to less predictable offspring colour.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eSnails\u003c\/td\u003e\n      \u003ctd\u003e✅ Yes\u003c\/td\u003e\n      \u003ctd\u003eExcellent companions; useful answer to the common shrimp and snails question.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eCichlids \/ Puffers\u003c\/td\u003e\n      \u003ctd\u003e❌ Avoid\u003c\/td\u003e\n      \u003ctd\u003eHigh predation risk for adults and shrimplets.\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003ePeople comparing \u003cstrong\u003eblue jelly shrimp water parameters\u003c\/strong\u003e, \u003cstrong\u003eblue rili shrimp uk\u003c\/strong\u003e and Blue Marys should know that care is broadly similar, but colour genetics differ. If your goal is a strong breeding line, keep one colour morph per tank. For buyers searching \u003cstrong\u003ebuy neocaridina shrimp\u003c\/strong\u003e, \u003cstrong\u003eneocaridina shrimp for sale uk\u003c\/strong\u003e, \u003cstrong\u003ebuy aquarium shrimp online uk\u003c\/strong\u003e, \u003cstrong\u003elive freshwater shrimp for sale uk\u003c\/strong\u003e, \u003cstrong\u003ecold water shrimp for sale uk\u003c\/strong\u003e or \u003cstrong\u003efreshwater shrimp pets at home\u003c\/strong\u003e, Blue Mary is often the better choice when you want hardy Neocaridina rather than specialist shrimp.\u003c\/p\u003e\n\u003cdiv class=\"tip-box\"\u003e\n  \u003ch4\u003e💡 Compatibility Tip\u003c\/h4\u003e\n  \u003cp\u003eAlways quarantine new arrivals for 2-4 weeks when possible. Shrimp are sensitive to sudden pathogens, medications and water chemistry changes, so a careful introduction protects both the new stock and your established colony.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2 id=\"breeding\"\u003eHow to Breed Blue Mary Shrimp: Complete Breeding Guide\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eBlue mary shrimp breeding\u003c\/strong\u003e is one of the main reasons this variety is so popular. They are prolific under stable conditions and are suitable for hobbyists wanting a self-sustaining display. If you are building a \u003cstrong\u003eblue mary shrimp colony\u003c\/strong\u003e, start with at least 8-10 individuals to improve the odds of getting both sexes.\u003c\/p\u003e\n\u003ch3\u003eBreeding Setup\u003c\/h3\u003e\n\u003cp\u003eA dedicated shrimp tank of 20-30 litres with moss, sponge filtration and stable minerals is ideal. Mature females are larger and show a curved underside for carrying eggs. A visible saddle behind the head often indicates developing eggs. Searches like \u003cstrong\u003efreshwater shrimp uk male\u003c\/strong\u003e usually come from people trying to sex shrimp; males are slimmer, smaller and often less intensely coloured.\u003c\/p\u003e\n\u003ch3\u003eSpawning Behaviour\u003c\/h3\u003e\n\u003cp\u003eAfter moulting, a receptive female releases pheromones and males become noticeably active. This is normal and often the first sign breeding is underway. People asking \u003cstrong\u003ehow often do freshwater shrimp breed\u003c\/strong\u003e should expect regular breeding in a healthy colony, especially at warm but not excessive temperatures with steady feeding.\u003c\/p\u003e\n\u003ch3\u003eEgg Care \u0026amp; Hatching\u003c\/h3\u003e\n\u003cp\u003eFemales carry roughly 20-30 eggs under the abdomen for around 2-3 weeks. She fans them constantly to keep them oxygenated and clean. Unlike many aquatic invertebrates, \u003cem\u003eNeocaridina davidi\u003c\/em\u003e do not pass through a free-swimming larval stage. Babies hatch as miniature shrimp, which makes them much easier to raise than marine species.\u003c\/p\u003e\n\u003ch3\u003eJuvenile Care \u0026amp; Challenges\u003c\/h3\u003e\n\u003cp\u003eBaby shrimp need biofilm, powdered shrimp food and dense cover. Mosses are especially useful because they trap microorganisms and protect young shrimp from fish. If shrimplets disappear, the usual causes are predation, unstable water or over-cleaning. People searching for \u003cstrong\u003efreshwater shrimp that don't breed\u003c\/strong\u003e should note that Blue Marys are not in that category; they breed readily when settled.\u003c\/p\u003e\n\u003cdiv class=\"tip-box\"\u003e\n  \u003ch4\u003eAdvanced Breeding Tip\u003c\/h4\u003e\n  \u003cp\u003eTo keep the line looking blue, cull selectively for colour depth and avoid mixing Blue Mary with other Neocaridina morphs. Mixed colonies may still be healthy and attractive, but offspring can revert toward wild-type or produce inconsistent shades over time.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2 id=\"comparison\"\u003eBlue Mary Shrimp vs Similar Species: Which Should You Choose?\u003c\/h2\u003e\n\u003cp\u003eComparing shrimp lines matters because many look similar online but behave differently in breeding projects. Blue Mary is often chosen by aquarists who want a translucent blue shrimp that is hardy, active and easier than Caridina. It is especially attractive for keepers deciding between classic cherry shrimp strains and more specialist bee shrimp.\u003c\/p\u003e\n\u003ctable class=\"comparison-table\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eBlue Mary Shrimp\u003c\/th\u003e\n\u003cth\u003eCrystal Bee Shrimp\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\u003eAbout 3 cm\u003c\/td\u003e\n\u003ctd\u003eAbout 2.5-3 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCare Level\u003c\/td\u003e\n\u003ctd\u003eEasy to moderate\u003c\/td\u003e\n\u003ctd\u003eAdvanced\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTemperature\u003c\/td\u003e\n\u003ctd\u003e18-28°C\u003c\/td\u003e\n\u003ctd\u003e20-24°C preferred\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePrice\u003c\/td\u003e\n\u003ctd\u003e£8.71\u003c\/td\u003e\n\u003ctd\u003eUsually higher\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBest For\u003c\/td\u003e\n\u003ctd\u003eHardy planted shrimp tanks\u003c\/td\u003e\n\u003ctd\u003eSpecialist soft-water setups\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable class=\"comparison-table\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eBlue Mary Shrimp\u003c\/th\u003e\n\u003cth\u003eBlue Rili Shrimp\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBody Style\u003c\/td\u003e\n\u003ctd\u003eTranslucent blue coverage\u003c\/td\u003e\n\u003ctd\u003eBlue with clear sections\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBreeding Stability\u003c\/td\u003e\n\u003ctd\u003eGood within line\u003c\/td\u003e\n\u003ctd\u003eGood within line\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eVisual Effect\u003c\/td\u003e\n\u003ctd\u003eSoft, smoky blue\u003c\/td\u003e\n\u003ctd\u003eHigh contrast rili pattern\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePrice\u003c\/td\u003e\n\u003ctd\u003e£8.71\u003c\/td\u003e\n\u003ctd\u003eSimilar range\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBest For\u003c\/td\u003e\n\u003ctd\u003eNatural blue colony look\u003c\/td\u003e\n\u003ctd\u003ePattern-focused display\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eChoose Blue Mary if you want a calm, elegant blue tone and straightforward Neocaridina care. Choose crystal bee shrimp only if you are prepared for tighter water control. Choose \u003ca href=\"\/products\/freshwater-shrimp-uk\"\u003eBlue Rili Shrimp\u003c\/a\u003e if you prefer patterned bodies, or \u003ca href=\"\/products\/freshwater-shrimp-uk\"\u003eOrange Sakura Shrimp\u003c\/a\u003e and \u003ca href=\"\/products\/freshwater-shrimp-uk\"\u003eRed Sakura Shrimp\u003c\/a\u003e if you want stronger opaque pigment. For many keepers searching \u003cstrong\u003ebest shrimp for community tank\u003c\/strong\u003e, Blue Mary offers one of the best balances of colour, hardiness and breeding ease.\u003c\/p\u003e\n\n\u003ch2 id=\"health\"\u003eCommon Health Problems in Blue Mary Shrimp \u0026amp; How to Prevent Them\u003c\/h2\u003e\n\u003cp\u003eHealthy Blue Mary Shrimp are active grazers with clear movement, regular moults and good appetite. Females should carry eggs confidently when settled, and juveniles should be visible on plants and hardscape. If shrimp hide constantly, stop feeding, fail to moult or die after water changes, the issue is usually environmental rather than infectious.\u003c\/p\u003e\n\u003ch3\u003eCommon Problems\u003c\/h3\u003e\n\u003cp\u003eMoulting trouble is one of the biggest risks. This is often linked to poor mineral balance, sudden TDS shifts or stress. Failed moults may leave shrimp trapped in the old shell. Another frequent issue is unexplained loss after adding medication, especially if copper is present. Bacterial decline can also occur in dirty tanks with excess organics.\u003c\/p\u003e\n\u003ch3\u003eTreatment \u0026amp; Prevention\u003c\/h3\u003e\n\u003cp\u003eThe best treatment is prevention: stable water, moderate feeding, regular testing and slow acclimation. Small weekly water changes of 10-20% are safer than large changes. Quarantine all new livestock and plants when possible. Hobbyists searching broad terms like \u003cstrong\u003efreshwater shrimp uk healthcare\u003c\/strong\u003e should focus first on water quality, because most shrimp losses come from chemistry swings, toxins or predation rather than classic fish diseases.\u003c\/p\u003e\n\u003cdiv class=\"warning-box\"\u003e\n  \u003ch4\u003e⚠️ Critical Warning\u003c\/h4\u003e\n  \u003cp\u003eNever use copper-based medications with shrimp or other invertebrates. Copper can be lethal even at low doses. Always read labels carefully before treating a community tank that contains shrimp or snails.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"info-box\"\u003e\n  \u003ch4\u003eQuarantine Protocol\u003c\/h4\u003e\n  \u003cul\u003e\n    \u003cli\u003eUse a separate cycled tank for 2-4 weeks\u003c\/li\u003e\n    \u003cli\u003eObserve feeding, moulting and activity daily\u003c\/li\u003e\n    \u003cli\u003eMatch temperature and hardness before transfer\u003c\/li\u003e\n    \u003cli\u003eAvoid unnecessary medications\u003c\/li\u003e\n    \u003cli\u003eCheck all plant dips and treatments for shrimp safety\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003eOnline searches such as \u003cstrong\u003ewhich shrimp for sale uk online\u003c\/strong\u003e, \u003cstrong\u003ewhich shrimp for sale uk 2024\u003c\/strong\u003e or \u003cstrong\u003ewhich shrimp for sale uk 2023\u003c\/strong\u003e often reflect buyers trying to find hardy stock. For long-term success, the condition of the shrimp and the quality of acclimation matter more than chasing the cheapest listing.\u003c\/p\u003e\n\n\u003ch2 id=\"behavior\"\u003eHow Do Blue Mary Shrimp Behave in the Aquarium?\u003c\/h2\u003e\n\u003cp\u003eBlue Mary Shrimp are peaceful, social and constantly busy. They are not schooling animals in the fish sense, but they do feel more secure in groups and are best kept in numbers of 6 or more. Most of the day is spent grazing on surfaces, climbing through moss and picking at microscopic food.\u003c\/p\u003e\n\u003cp\u003eThey are usually most visible in mature tanks with lots of cover. In sparse aquariums they can seem shy, especially after transport or moulting. During breeding periods, males may dart around the tank searching for a female that has recently moulted. This burst of activity is normal.\u003c\/p\u003e\n\u003cp\u003eOne of the nicest things about keeping Blue Mary Shrimp is how much behaviour you see in a small space. In a well-planted aquarium, adults, juveniles and berried females all use different micro-areas of the tank. This makes them ideal for aquarists who enjoy close observation rather than fast, flashy fish movement.\u003c\/p\u003e\n\n\u003ch2 id=\"why-buy\"\u003eWhy Buy from Tropical Fish Co?\u003c\/h2\u003e\n\u003cp\u003eWhen people search \u003cstrong\u003eshrimp for sale UK\u003c\/strong\u003e, \u003cstrong\u003eshrimps for sale near me\u003c\/strong\u003e, \u003cstrong\u003eblue mary shrimp for sale UK\u003c\/strong\u003e or \u003cstrong\u003ewhere to buy blue mary shrimp UK\u003c\/strong\u003e, they usually want three things: healthy stock, accurate identification and safe delivery. That matters with Blue Mary Shrimp because colour quality, moulting condition and acclimation all affect how well they settle.\u003c\/p\u003e\n\u003cp\u003eOur Blue Mary Shrimp are selected for the soft blue body tone that makes this line popular, with attention paid to active behaviour, clean shell condition and strong feeding response before dispatch. This is especially important for buyers comparing \u003cstrong\u003eblue mary shrimp online UK\u003c\/strong\u003e, \u003cstrong\u003ebuy blue mary shrimp UK\u003c\/strong\u003e and \u003cstrong\u003eorder blue mary shrimp UK\u003c\/strong\u003e results. We do not treat them like generic mixed cherry shrimp.\u003c\/p\u003e\n\u003cp\u003eEach batch is checked in holding systems for stability and feeding before shipment. Shrimp are packed in insulated boxes, with seasonal heat protection when needed, and sent by tracked delivery. That makes a real difference for anyone concerned about \u003cstrong\u003eblue mary shrimp delivery UK\u003c\/strong\u003e and transit stress. We also provide practical acclimation guidance because sudden pH or hardness changes are one of the main causes of post-arrival losses.\u003c\/p\u003e\n\u003cp\u003eIf you are comparing \u003cstrong\u003eblue mary shrimp price UK\u003c\/strong\u003e, \u003cstrong\u003echeap blue mary shrimp UK\u003c\/strong\u003e, \u003cstrong\u003eblue mary shrimp shop UK\u003c\/strong\u003e and \u003cstrong\u003echerry shrimp for sale uk\u003c\/strong\u003e listings, remember that healthy, well-conditioned shrimp settle faster, moult better and breed sooner. Order your Blue Mary Shrimp today with confidence and build a striking blue Neocaridina colony in a properly prepared aquarium.\u003c\/p\u003e\n\u003cdiv class=\"care-highlight\"\u003e\n  \u003ch4\u003eWhy Choose Tropical Fish Co for Blue Mary Shrimp\u003c\/h4\u003e\n  \u003cul\u003e\n    \u003cli\u003eSelected for attractive translucent blue colour rather than mixed low-grade assorted shrimp\u003c\/li\u003e\n    \u003cli\u003eChecked for active grazing behaviour and good condition before dispatch\u003c\/li\u003e\n    \u003cli\u003ePacked for UK transit with insulated materials and seasonal temperature protection\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2 id=\"related-products\"\u003eYou Might Also Like\u003c\/h2\u003e\n\u003cp\u003eComplete your Neocaridina setup with related colour forms and compatible shrimp options. For a stronger opaque red contrast, consider \u003ca href=\"\/products\/freshwater-shrimp-uk\"\u003eSuper Red Sakura Shrimp\u003c\/a\u003e or \u003ca href=\"\/products\/freshwater-shrimp-uk\"\u003eRed Sakura Shrimp\u003c\/a\u003e. If you prefer patterned shrimp, \u003ca href=\"\/products\/freshwater-shrimp-uk\"\u003eBlue Rili Shrimp\u003c\/a\u003e, \u003ca href=\"\/products\/freshwater-shrimp-uk\"\u003eOrange Rili Shrimp\u003c\/a\u003e and \u003ca href=\"\/products\/freshwater-shrimp-uk\"\u003eRed Rili Shrimp\u003c\/a\u003e make excellent alternatives. For a brighter orange colony, try \u003ca href=\"\/products\/freshwater-shrimp-uk\"\u003eOrange Sakura Shrimp\u003c\/a\u003e. You can also browse the full \u003ca href=\"\/products\/freshwater-shrimp-uk\"\u003efreshwater shrimp UK collection\u003c\/a\u003e to compare colour lines, colony options and other \u003cstrong\u003efreshwater shrimp for sale uk\u003c\/strong\u003e choices for planted nano aquariums.\u003c\/p\u003e","brand":"Tropical Fish Co","offers":[{"title":"Default Title","offer_id":57379677569359,"sku":"K652","price":12.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/1408\/6735\/files\/neocaridina-davidi-blue-mary-natural-aquarium-k652.webp?v=1777850028","url":"https:\/\/tropical-fish-co.myshopify.com\/products\/blue-mary-cherry-shrimp-freshwater-sale-uk","provider":"Tropical Fish Co","version":"1.0","type":"link"}