Roman Nose Angelfish
Pterophyllum scalare
The Roman Nose Angelfish (Pterophyllum scalare) is a semi-aggressive fish that's rewarding to keep. Give it a tank of at least 115 litres (30 US gallons), water held at 72-84°F, and a pH of 6.5-7.5.
Captive lifespan reflects typical experience in a home aquarium, not maximum recorded age; genetics, sourcing, and care vary.
Natural distribution
South America
- South America
Regional colours match the stocking calculator's origin map.
Roman Nose Angelfish Tank Setup
Give them at least 115 litres (30 US gallons). Cichlids are territorial and produce plenty of waste, so strong filtration and some rocks or wood to break up sight lines both help. Aim for 72-84°F and a pH around 6.5-7.5.
What Do Roman Nose Angelfish Eat?
They're not fussy eaters - feed a varied diet, rotating good-quality dry, frozen, and gel foods rather than the same thing every day, and match the food size to their mouths.
Roman Nose Angelfish Tank Mates
The Roman Nose Angelfish is semi-aggressive, which is the first thing to weigh up when you choose tank mates. Good matches come down to the whole stocking list working together - temperature, tank size, and temperament - not any single label. Before you buy, run your full stocking list through our stocking calculator. It weighs temperament, adult size, and water needs together, which a single species page can't do on its own.
Are Roman Nose Angelfish Good for Beginners?
Care demand varies by line and setup. Match the care level to how often you actually test and change water.
Roman Nose Angelfish - frequently asked questions
What size tank do Roman Nose Angelfish need?
Roman Nose Angelfish need a tank of at least 115 litres (30 US gallons). A bigger tank is always easier to keep stable, and gives them more room to settle in and behave naturally.
What water parameters do Roman Nose Angelfish need?
Keep them at 72-84°F with a pH of 6.5-7.5, steady rather than chased to an exact figure. In a cycled tank, ammonia and nitrite should both read 0 ppm, with nitrate kept low through regular water changes.
What do Roman Nose Angelfish eat?
Roman Nose Angelfish are omnivores and aren't fussy eaters. Feed a varied mix of good-quality dry, frozen, and gel foods, and match the food size to their mouths. Feed small amounts once or twice a day, and remove anything they don't eat.
Are Roman Nose Angelfish good for beginners?
It depends on the setup. Match Roman Nose Angelfish to how often you actually test water and perform maintenance.
Common mistakes with Roman Nose Angelfish
- Underestimating tank size - the minimum footprint is 115 litres (30 US gallons); impulse buying into a smaller tank leads to stress and shortened lifespan.
Building a community? Run the full list through the stocking calculator before you add anything else.
Great tank mates
Chosen from temperament, overlapping temperature/pH bands, plausible minimum tank footprints, and size versus yours in App-aquatic data. Hobby nuance always wins - verify stocking and temperament before purchasing.
Check Roman Nose Angelfish against any other fish → Compares water parameters, predation risk, fin nipping and tank size, and draws both at life size.
Fish to avoid mixing with Roman Nose Angelfish
These well-known species are commonly sold alongside this fish but are not recommended tank mates - verify before purchasing.
- Pea PufferPredator - Pea Puffer will eat or injure smaller tank mates
- Serpae TetraFin nipper - will shred the fins of peaceful fish
- Tiger BarbFin nipper - will shred the fins of peaceful fish
