๐Ÿ  Fish Compatibility Guide

Can Coral Beauty and Oscar Live Together?

Updated September 23, 2026 ยท FishCare AI Editorial Team

โŒ Not Compatible โ€” Compatibility Score: 0/100
0/100 โ€” Not Compatible

Coral Beauty and Oscar Compatibility Overview

Coral Beauty and Oscar are generally not recommended to be housed together. One of these is a marine species and the other is not; they cannot share one aquarium. The adult size gap creates a meaningful predation risk. Review the behavior and water details before deciding whether to attempt the pairing.

Compatibility factors for Coral Beauty and Oscar
FactorCoral BeautyOscarVerdict
Temperature72โ€“82ยฐF74โ€“81ยฐFโœ… 74โ€“81ยฐF
pH Range8.1โ€“8.46.0โ€“8.0โŒ No overlap
TemperamentpeacefulaggressiveโŒ Risk
Adult Size4.0 in14 inโš ๏ธ 3.5ร— difference
Min. Group1+1+See below
Min. Tank Size100 gallons (for both species)โ€”

Compatibility Positives

A stable shared temperature range is available.

Incompatibility Reasons

One of these is a marine species and the other is not; they cannot share one aquarium.
The adult size gap creates a meaningful predation risk.
Their pH ranges do not meet: Coral Beauty wants 8.1โ€“8.4 and Oscar wants 6.0โ€“8.0.
Coral Beauty is peaceful and Oscar is aggressive. Expect chasing and fin damage unless the tank is oversized, heavily planted, and watched closely.

Species Profiles

Coral Beauty โ€” Centropyge bispinosa

Coral Beauty and Oscar compatibility โ€” Coral Beauty

The Coral Beauty Angelfish is a popular choice for reef tanks due to its vibrant colors and gentle demeanor. These fish thrive in well-maintained aquariums with plenty of swimming space and hiding spots. They are generally peaceful with other compatible fish but can be sensitive to aggressive tankmates. A diet rich in variety is essential for their health.

โ†’ Full Coral Beauty care guide

Oscar โ€” Astronotus ocellatus

Coral Beauty and Oscar compatibility โ€” Oscar

Intelligent but aggressive cichlids that will eat any fish small enough to fit in their mouth. Require large tanks (75+ gallons) and robust tank mates.

โ†’ Full Oscar care guide

Frequently Asked Questions

Can Coral Beauty live with Oscar?

Generally not recommended. Coral Beauty and Oscar are generally not recommended to be housed together. One of these is a marine species and the other is not; they cannot share one aquarium. The adult size gap creates a meaningful predation risk. Review the behavior and water details before deciding whether to attempt the pairing.

What tank size do I need for Coral Beauty and Oscar together?

A minimum of 100 gallons is recommended for keeping Coral Beauty and Oscar together. A larger tank improves water stability and reduces territorial conflict.

What temperature suits both Coral Beauty and Oscar?

74โ€“81ยฐF โ€” inside Coral Beauty's 72โ€“82ยฐF and Oscar's 74โ€“81ยฐF.

Is a Coral Beauty aggressive toward a Oscar?

The adult size gap creates a meaningful predation risk.

Related Compatibility Guides

Tank Size for Coral Beauty and Oscar

Use the scenario that matches the actual group sizes and temperament you plan to keep.

ScenarioTankWhen it applies
Minimum viable100 galOnly for the recommended minimum groups, mature filtration, and close monitoring.
Recommended community150 galAdds territory, swimming room, and a safer buffer for behavior.
Low-conflict setup180 galBest when keeping larger schools or reducing territorial pressure.