Cichlid
Care basics
The altum is the tallest angelfish, with a steep forehead and very long fins. Most in the trade are wild caught and need careful acclimation.
It needs very soft, acidic, warm water, a tall tank and peaceful tank mates too big to eat. It is a fish for experienced keepers.
Quick facts
| Scientific name | Pterophyllum altum |
|---|---|
| Group | South America |
| Native to | Rio Negro and Orinoco basins of Brazil, Colombia and Venezuela |
| Adult size | Up to about 7 inches long, with much taller fins |
| Tank size | A tall tank of 75 gallons or more, at least 24 inches high, for a group |
| Temperature | 82 to 90 F |
| pH | 4.8 to 6.2, very soft water |
| Temperament | Calm like the common angelfish, but will eat fish small enough to swallow. Sensitive and often difficult. |
Figures follow published species profiles such as Seriously Fish, and tank sizes are general guidance. Individual fish and local water vary, so test your water and ask your fish store about the specific fish you buy.
