Oscar Fish Resource Hub
Oscar fish care guide covering large tank requirements, feeding, behavior, tank mates, and common diseases.
By Elena Vargas, Freshwater Aquarium Specialist
Tank
55 gallons
Temp
74–81°F (23–27°C)
pH
6.0–8.0
Diet
Carnivore (cichlid pellets, live fish)
Level
Intermediate
Social
Aggressive — keep alone or bonded pair
Resource Hub
Everything About Oscar Fish
2 guides covering every aspect of oscar fish care — organized so you can find exactly what you need.
Setup & Habitat
Learn how to build the perfect aquarium — tank size, substrate, filtration, and environment basics.
Oscar Cichlid Care in a Planted Tank: Size & Tank Mates
Can an Oscar cichlid thrive with live plants? Learn tank size, hardy plant choices, filtration, lighting, and safer tank mates before building your setup.
Tiger Oscar Fish: Why It Won't Fit a Desk Tank
Tiger Oscar fish need far more room than a desk tank. Learn proper tank size, quiet filtration, office-safe care, costs, and better small-tank picks today.