Oscar (Astronotus ocellatus)
Oscar (Astronotus ocellatus)
The Oscar (Astronotus ocellatus) is an intelligent, personable large cichlid often called the 'water dog'. Originating from South America (Amazon basin), this semi-aggressive species is rated as moderate care level and can live up to 15 years with proper husbandry.
Care at a Glance
| Scientific Name | Astronotus ocellatus |
| Family | Cichlidae |
| Origin | South America (Amazon basin) |
| Care Level | moderate |
| Temperament | semi-aggressive |
| Adult Size | 35 cm |
| Minimum Tank Size | 450 litres |
| Temperature | 22–28°C |
| pH Range | 6.0–8.0 |
| Water Hardness | 5–20 dGH |
| Diet | Omnivore; cichlid pellets, frozen foods, earthworms, prawns |
| Lifespan | 15 years |
| Tank Region | middle |
| Group Size | 1 or bonded pair |
Origin & Natural Habitat
The Oscar hails from South America (Amazon basin). Oscars are highly intelligent fish that recognise their owners. They grow large and produce significant waste, requiring powerful filtration. Available in Tiger, Red, Albino varieties.
Tank Setup & Water Parameters
Provide a minimum of 450 litres for your Oscar. Adults reach approximately 35 cm, so plan accordingly. Maintain water temperature between 22–28°C with a pH of 6.0–8.0 and hardness of 5–20 dGH. This species primarily occupies the middle region of the aquarium. Recommended group size: 1 or bonded pair.
Feeding Guide
The Oscar is an omnivore. Omnivore; cichlid pellets, frozen foods, earthworms, prawns. Feed small portions twice daily for optimal health and colouration.
Compatible Tank Mates
Good companions for the Oscar include Silver dollars, Large catfish, Plecostomus. Avoid housing with Small fish, Shrimp. You might also consider species such as Astronotus Ocellatus «Tiger», Astronotus Ocellatus «Albino», Astronotus Ocellatus «Red» from our collection.
Why Buy from Tropical Fish Co?
At Tropical Fish Co, every fish is carefully selected and shipped with care across the UK. We offer live arrival guarantee, expert advice, and competitive prices. Order your Oscar today and enjoy next-day delivery to your door.