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While freshwater angelfish are often recommended for community aquaria, it has been reported that fin-nippers such as Tiger barb often target their long fins, and that freshwater angelfish become aggressive towards their companions as they grow. [1] It is thus recommended that freshwater angelfish be kept instead in single-species aquaria. [1]
The largest species, the gray angelfish, Pomacanthus arcuatus, may reach a length of 60 cm (24 in); at the other extreme, members of the genus Centropyge do not exceed 15 cm (5.9 in). A length of 20 to 30 cm (7.9 to 11.8 in) is typical for the rest of the family.
The royal angelfish (Pygoplites diacanthus), or regal angelfish, is a species of marine ray-finned fish, a marine angelfish belonging to the family Pomacanthidae, and the monotypic genus Pygoplites. It is found in tropical Indo-Pacific oceans. It can grow as long as 25 cm (9.8 in).
The earliest fossils of anglerfish are from the Eocene Monte Bolca formation of Italy, and these already show significant diversification into the modern families that make up the order. [5]
M. johnsonii inhabits the mesopelagic and bathypelagic zones, and is found most commonly at depths between 200 and 1,500 metres (660 and 4,920 ft). [5] Compared to other species in the genus, M. johnsonii is more likely to be found at shallower depths; 65% of recorded specimens were collected at depths of or above 1,000 metres (3,300 ft) below the surface of the water. [5]
Pterophyllum scalare, most commonly referred to as angelfish or freshwater angelfish, is the most common species of Pterophyllum kept in captivity. It is native to the Amazon Basin in Peru , Colombia , and Brazil .
Figure 1: Adult king angelfish (A), juvenile king angelfish (B), range of the king angelfish (C) Adult king angelfish are generally about 35 cm in length. They have between 18 and 20 rays in their dorsal fin and each of their pectoral fins, and 17 to 19 in their anal fin. H. passer also possess a strong spike under their lower cheek for defense ...
Pomacanthus navarchus, the blue-girdled angelfish or majestic angelfish, is a marine angelfish from the Indo-Pacific region. It occasionally makes its way into the aquarium trade. [3] P. navarchus is one of the smallest of the larger species of angelfish. It grows to a maximum length of 28 centimetres (11 in), but is usually much smaller than ...