Common name: Black-faced blenny

General information

The Red-black triplefin, scientifically known as Tripterygion delaisi, is a small, colorful fish that is a member of the Tripterygiidae family. This species is known for its distinctive coloration, with males displaying a striking combination of red and black during the breeding season, which makes them quite attractive for nano and small reef aquariums.

Care

Tripterygion delaisi is a hardy species that can adapt to life in an aquarium, but they require a well-structured environment with plenty of rockwork and hiding places. They are peaceful fish that can be kept with other non-aggressive species. A varied diet of small live or frozen foods like brine shrimp, copepods, and mysis shrimp will help maintain their health and coloration.

Reproduction

Red-black triplefins are oviparous, with males displaying territorial behavior and guarding the eggs until they hatch. In an aquarium setting, breeding these fish can be challenging due to their specific requirements for spawning.

Habitat

This species is found in the Eastern Atlantic, from the Bay of Biscay to Morocco, including the Mediterranean and the Black Sea. They inhabit rocky reefs and seagrass beds, often seen perching on rocks or corals from shallow waters to depths of around 20 meters.