Back to Calculator
AngelfishVSOscar Fish

Can they live together? Complete Compatibility Analysis

Compatibility Score
25
🚫 Do Not Mix

Severe incompatibility in temperament and size. Oscars are large, highly aggressive, and predatory cichlids that will view Angelfish as food. Angelfish are semi-aggressive but are slow-moving, tall-bodied fish that are easily stressed and targeted by Oscars.

Potential Issues
  • •Oscars will almost certainly attack, kill, and eat Angelfish, especially as they grow.
  • •Even if the Oscar is well-fed, its territorial nature will cause constant stress and harassment of the Angelfish, leading to injury or death.
  • •The massive bioload of an Oscar requires a very large tank, making the space even more contested.
Tank Requirements
Temperature
75-82°F (Overlap exists)
pH Level
6.0-7.5 (Overlap exists)
Minimum Tank Size
125+ gallons (for a single adult Oscar alone; adding Angelfish is not recommended at any size)

About Angelfish and Oscar Fish

When considering adding Oscar Fish to a tank with Angelfish, it's crucial to understand their specific needs. Severe incompatibility in temperament and size. Oscars are large, highly aggressive, and predatory cichlids that will view Angelfish as food. Angelfish are semi-aggressive but are slow-moving, tall-bodied fish that are easily stressed and targeted by Oscars.

Key Differences in Care Requirements

Angelfish Needs

  • Tank Size: 30 gallons (114 liters) minimum
  • Water Type: tropical
  • Scientific Name: Pterophyllum scalare

Oscar Fish Needs

  • Tank Size: 55 gallons (208 liters) minimum
  • Water Type: tropical
  • Scientific Name: Astronotus ocellatus

TankMate AI Verdict

According to our TankMate AI analysis, understanding the temperament and environmental needs of both Angelfish and Oscar Fish is key to a successful community tank. Always monitor your fish for signs of stress or aggression, especially when introducing new tank mates.

* Disclaimer: Compatibility is based on typical species behavior. Individual fish personalities may vary. Always monitor new tank mates closely.

Have a more complex tank setup?

Our calculator can analyze multiple species at once.

Try Full Calculator