Altum Angelfish Care Guide
Pterophyllum altum · Freshwater Fish
What Altum Angelfish look like
Pterophyllum altum, commonly known as the Altum Angelfish, exhibits a strikingly tall and laterally compressed body, reaching a maximum adult size of approximately 6-8 inches in length. This species is characterized by a pronounced notch and slope on the forehead, which is more extreme than that of other angelfish. The coloration is predominantly pale, adorned with deep mahogany-brown vertical bands that enhance its majestic appearance. Sexual dimorphism is subtle; males tend to have slightly more elongated dorsal and anal fins, while females may exhibit a fuller body shape during breeding. Defensive adaptations include the ability to quickly maneuver through dense vegetation, and they possess a well-developed lateral line system that aids in detecting vibrations in the water. The dorsal fin is notably elongated, contributing to their graceful swimming style, while the presence of an adipose fin further distinguishes their morphology.
Behavior & temperament
Altum Angelfish are typically found in small groups in their natural habitat, displaying a social structure that is not strictly hierarchical but rather fluid, allowing for both solitary and communal behaviors. They predominantly dwell in the mid to upper water column, often near submerged structures and vegetation. During breeding, they exhibit egg-scattering behavior, laying adhesive eggs on flat surfaces, which they guard diligently. Their temperament can be described as semi-aggressive, particularly during breeding periods, as they may defend their territory against intruders. Outside of breeding, they are generally peaceful but can exhibit dominance displays towards conspecifics.
Diet & feeding
In the wild, Altum Angelfish are carnivorous, primarily feeding on small invertebrates and zooplankton. In captivity, they require a varied diet that includes high-quality pellets, frozen or live foods such as brine shrimp and bloodworms to ensure optimal health and coloration.
Behind the name
Pterophyllum (wing leaf); altum (high or tall).
Plan your tank
Check the numbers before you buy: tank volume, a stocking plan, cycle progress, water changes, and your ongoing care routine.
Keeping Altum Angelfish?
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