Guide
Angelfish (angel fish) care guide
A practical care guide for freshwater angelfish: tank size, feeding, and compatibility basics.
What are angelfish?
Freshwater angelfish (Pterophyllum scalare) are South American cichlids. People search both "angelfish" and "angel fish" - they mean the same aquarium fish.
Tank size and setup
A pair of angelfish usually needs at least a 30-gallon tank, with more space for groups. They are tall-bodied fish, so tank height matters. Use gentle-to-moderate flow, stable heating, and plenty of vertical swimming room.
Water and temperature
Keep temperature around 76-82 F (24-28 C). Stable water quality is key: ammonia and nitrite should stay at zero, nitrate low with regular water changes. Track readings with a test kit and logging routine.
Feeding
Feed a varied diet: quality flakes or pellets, plus occasional frozen foods. Avoid overfeeding; angelfish are enthusiastic eaters and leftovers quickly reduce water quality.
Temperament
Angelfish are generally peaceful but can be territorial, especially in breeding condition. They may eat very small fish that fit in their mouth.
Quick takeaways
- 30 gallons minimum for a pair; bigger is better for groups.
- Prioritize tank height, stable warm water, and strong maintenance habits.
- Choose tank mates carefully and avoid tiny fish that can be eaten.
More guides · Angelfish tank mates · Angelfish tank size · Water parameters