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FisheasyFreshwater

Oscar

Astronotus ocellatus

Family: Cichlidae

📍 Amazon & Orinoco Basins, South America

Ask Finn

Oscars are large, bold cichlids known for their personality and intelligence. They recognise their owners and can be hand-fed, but they are destructive tank inhabitants that will uproot plants and rearrange décor. They need very large tanks with robust filtration.

Keeping this species

diet
Carnivore/Omnivore – cichlid pellets, earthworms, crickets, shrimp
lifespan
10–15 years
max size
35 cm (14 in)
tank size
75 gallons minimum
temperament
Aggressive; best kept with similar-sized fish

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Tips from the community 💡

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Water it likes

ph
6.0–8.0
ammonia
0 ppm
nitrate
<30 ppm
hardness
5–20 dGH
temperature
73–82°F (23–28°C)

Natural Habitat Temperature

81°79°77°JFMAMJJASOND

77°F 81°F seasonal range  · (Jul low, Feb high)

Stats

Community tips0
Kept by0 hobbyists