fintofur

Oscar Fish

Advancedfreshwater
Astronotus ocellatus
Oscar Fish

Overview

The oscar is a species of fish from the cichlid family known under a variety of common names, including Tiger Oscar, Velvet Cichlid, and Marble Cichlid.

Water Parameters

Parameter Value
Temperature 23–28°C (73–82°F)
pH 6.0–8.0
Adult Size 30–38 cm (12–15 in)
Min Tank 75 gallons
Lifespan 10–15 years

Tank Setup

Feeding

Carnivore — cichlid pellets, earthworms, shrimp

Compatibility

Breeding


Image credit: Wikimedia Commons — licensed CC BY-SA 4.0.

Taxonomic data: *Astronotus ocellatus (Agassiz, 1831) * — GBIF (2026). Wikipedia summary: Oscar Fish — CC BY-SA 4.0.

Care parameters cross-referenced with Seriously Fish.

Quick facts & gear

Min tank size
75 gallons
Temperature
23–28°C (73–82°F)
pH range
6.0–8.0
Adult size
30–38 cm (12–15 in)
Lifespan
10–15 years
Origin
Member of family Cichlidae, order Perciformes. See species profile for distribution details.
Diet
Carnivore —cichlid pelletsearthwormsshrimp