Common name: Blacktail Triplefin

General information

The Blacktail Triplefin, scientifically known as Tripterygion melanurum, is a small, colorful fish found in the Mediterranean Sea and the eastern Atlantic Ocean. It is a member of the family Tripterygiidae, which is characterized by their three dorsal fins, hence the name 'triplefin'. These fish are known for their ability to change color during breeding season, which is a fascinating aspect for hobbyists.

Care

Blacktail Triplefins are relatively hardy and can be kept in a well-established aquarium with plenty of live rock for hiding and hunting microfauna. They are small, reaching only about 5 cm in length, making them suitable for nano or larger community tanks. They thrive in stable water conditions with good water quality and a varied diet of small live or frozen foods like copepods, brine shrimp, and other small invertebrates.

Reproduction

In the wild, Blacktail Triplefins exhibit interesting reproductive behaviors. Males become territorial and exhibit brighter colors to attract females. After spawning, the males guard the eggs until they hatch. In the aquarium, breeding these fish can be challenging due to their specific mating rituals and the need for pristine water conditions.

Habitat

Blacktail Triplefins are typically found in shallow, rocky coastal waters where they blend into their surroundings. They prefer areas with abundant algae growth, which provides both food and shelter. In the aquarium, replicating this environment with live rock and a mature algae presence can help these fish feel at home.

Their natural range extends from the Mediterranean Sea to the coasts of West Africa, including the Canary Islands and Azores.