Red Devil Angelfish (Pterophyllum scalare)
The Red Devil Angelfish, Pterophyllum scalare, is a dramatic captive-bred freshwater angelfish variety selected for strong red to orange colouration, bold dark markings and the tall, elegant body shape that makes angelfish such popular centrepiece fish. Like other domestic angelfish, it is peaceful for a cichlid when kept correctly, but adults can become territorial during pairing or breeding. This strain is best suited to a mature tropical aquarium with height, stable water quality, calm tank mates and plenty of cover.
Common Name
Red Devil Angelfish, Red Angelfish, Red Devil Angel, Freshwater Angelfish, Scalare Angelfish.
Scientific Name (Latin)
Pterophyllum scalare
| Specification | Detail |
|---|---|
| Species | Pterophyllum scalare |
| Common Name | Red Devil Angelfish |
| Origin | South America |
| Size (adult) | 3 to 4 inches |
| Water Temperature | 75–82°F |
| Water pH | 6.0–7.5 |
| Water Hardness | 2–10 dGH |
| Compatibility | Calm, non-aggressive fish; avoid cichlids and aggressive species |
FAQ
What is the ideal tank size for a Red Devil Angelfish?
A mature tropical aquarium with at least 20 gallons is recommended to provide enough space and stability for this fish to thrive.
Are Red Devil Angelfish aggressive?
They are generally peaceful but can become territorial when paired or during breeding. They should be kept with calm, non-aggressive tank mates.
What kind of water conditions do they prefer?
They prefer stable water conditions with a temperature between 75–82°F, pH between 6.0–7.5, and water hardness of 2–10 dGH.
Ella Wright –
The Red Devil Angelfish is striking in appearance with vibrant red and dark markings. It’s peaceful in a well-maintained tank with other calm fish. I’ve kept it for over a year and it’s grown steadily without any aggression issues. The tank setup is simple but effective with plenty of plants and hiding spots.
Rose Roberts –
Beautiful fish with a strong coloration. I noticed it became slightly territorial when I added another male, so I now keep it alone. Water quality needs to be stable, and I’ve been testing parameters weekly. Overall, a great addition to a tropical aquarium.
Jessica McGrath –
The fish arrived healthy and active. It’s very elegant and stands out in the tank. I keep it with peaceful tetras and dwarf corydoras. No issues with aggression so far. The water parameters are stable and I maintain them regularly.