Roman Nose Angelfish

Pterophyllum scalare

Roman Nose Angelfish (Pterophyllum scalare) — Varies care, Peaceful, under Other. Minimum tank in the app: 30 US gal min; aim for 72–84°F and pH 6.5–7.5. The Roman Nose Angelfish is a captivating choice for those seeking a unique addition to their aquarium, given its variable temperament and adaptability.

Roman Nose Angelfish (Pterophyllum scalare) in a planted freshwater aquarium
Care levelVaries
TemperamentPeaceful
Min tank size30 US gal min
pH range6.5–7.5
Temperature72–84°F
Max size3.9 in (10.0 cm)
Captive lifespan8–12 years
SchoolingNo

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

Create a balanced environment that offers both open swimming space and plenty of hiding spots. Utilize mid-height decorations and floating plants to accommodate their swimming zone while providing shelter. Maintain moderate water flow and consider a substrate that mimics their natural habitat, with subdued lighting to promote comfort.

What Do Roman Nose Angelfishs Eat?

Their omnivorous diet allows for flexible feeding strategies, but they can be competitive eaters, necessitating careful attention to ensure all tank inhabitants receive adequate nourishment. Consider offering a varied diet that includes both flakes and frozen foods to enhance coloration and overall health, but avoid overfeeding to prevent water quality issues.

Roman Nose Angelfish Tank Mates

Ideal tank mates include similarly sized, semi-aggressive fish that occupy different swim zones, such as certain tetras or barbs. Avoid pairing with overly aggressive species or those that may outcompete for food, as this can lead to stress. Intraspecies, it's best to keep them singly or in small groups to minimize territorial disputes.

Are Roman Nose Angelfishs Good for Beginners?

Care demand varies with setup and individual fish; use the numbers above as your baseline. Aquarists often underestimate the Roman Nose Angelfish's need for both space and structure, leading to territorial disputes and stress. Failing to provide a varied diet can also result in health issues, as can neglecting water parameters, particularly pH and temperature, which are critical for their well-being.

Building a community? Run the full list through the stocking calculator before you add anything else.

Log tests and reminders in App-aquatic—free, same data you see here.