The Paletail Damsel – Pomacentrus trichrourus is a colorful and intriguing species of fish belonging to the damselfish family (Pomacentridae). This small, vibrant fish is a common sight in the coral reefs and rocky shores of the Indo-Pacific region. It is known for its striking coloration and its distinctive pale tail, which gives it its common name.
Description & Characteristics
The Pomacentrus trichrourus can grow to a maximum size of 11.0 cm, making it a relatively small fish. It has a compressed, oval-shaped body with a rounded head. Its coloration is quite striking, featuring a bright yellow body with a dark blue or black stripe running along the sides. The tail is pale yellow, contrasting sharply with the body, leading to its name. The pale tail is also a good identification feature to distinguish this species from other similar-looking damsels.
Habitat and Occurrence
The Pomacentrus trichrourus is a common resident of the subtidal, sublittoral, infralittoral, and deep zones of the oceans from the lower limit of the intertidal zone to the shelf edge at about 200 m water depth (neritic). This means it is found in a wide range of marine environments, from shallow coastal waters to the deeper depths of the continental shelf. This adaptable fish thrives in coral reefs, rocky shores, and seagrass meadows, where it seeks shelter and food.
Taxonomy
The Pomacentrus trichrourus is a member of the Class: Teleostei, Order: Ovalentaria incertae sedis, and Family: Pomacentridae. This classification places it within the vast and diverse group of ray-finned fishes, highlighting its relationships to other fish species.
Feeding
The Pomacentrus trichrourus is an omnivore, feeding on a variety of small organisms, including brine shrimps, flakes, frozen food, and mysis. This diet provides the fish with the nutrients it needs to thrive in its marine environment.
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