Kingdom: Animalia

Phylum: Chordata

Class: Actinopterygii

Order: Perciformes

Family: Pomacanthidae

Genus: Apolemichthys

Species: A. xanthurus

Physical Description

The Indian Yellowtail Angelfish belong to the family Pomacanthidae. This is a mid-sized angel that will only grow to about 6 inches (15 cm) in length. It is creamy overall, bordered entirely with a broad dark margin and has a dark brown face and brown to black tipped scales, giving it a spotted appearance. The fins are edged in white and the tail fin is a pale yellow. The juvenile is very similar to the adult, though slightly lighter. So no matter what its stage of development, the specimen you get will immediately give your tank the attractive showpiece you are looking for. The coloring of this small beauty has led to a number of descriptive common names including Cream Angelfish, Smoke Angelfish, Yellowtail Angelfish.

Biology and Behavior

In the wild, pomacanthids may feed on sessile invertebrates, algae or plankton depending upon the species. Generally the Yellowtail Angelfish leads a singly life sometimes in pairs. Depending on the generic grouping, angelfishes display different social organizations ranging from monogamous to haremic, and a few are known protogynous hermaphrodites.

Habitat and Distribution

It is a marine fish live mostly in the  reef-associated regions. Usually at a depth range 5 – 25 m. It prefer a Tropical climate and seen in parts of Western Indian Ocean, Mauritius to India and Sri Lanka.

Reference:

http://animal-world.com/encyclo/marine/angels/IndYellowTail.php

http://www.fishbase.org/summary/10943