The redtail blennie ( Ecsenius bicolor ) is an extremely popular and useful inhabitant of marine aquariums. With its striking coloration, lively character, and important role in algae control, it is a valuable addition to any reef aquarium. At the same time, it is robust, easy to care for, and also ideally suited for beginners.

Features

• Size: Adult animals reach about 1011 cm .

• Coloration: The redtail blennie is easily recognizable by its two-toned appearance the front part of its body is dark brown to black, while the rear part and the tail fin shine in vibrant orange to red. This high-contrast pattern makes it an attractive eye-catcher in the aquarium.

• Behavior: Ecsenius bicolor is a peaceful, curious, and very active fish that is constantly searching for food. It usually stays near the bottom or on rocks and exhibits an interesting, characteristic behavior when grazing on algae.

Posture & Care

• Aquarium size: Suitable from 200250 liters . A well-structured aquarium with live rock, algae growth and plenty of hiding places is ideal.

• Water parameters: Temperature: 2427 C | pH value: 8.08.4 | Density: 1.0221.025

• Socialization: The redtail blennie is very peaceful and can easily be kept with other non-aggressive fish, shrimp, and invertebrates. However, males can exhibit territorial behavior, so keeping them individually or as a compatible pair is recommended.

Food

Ecsenius bicolor feeds primarily on microalgae and filamentous algae, which it grazes from rocks and reef structures. If the natural food supply is insufficient, supplemental plant-based foods such as nori seaweed, spirulina, or specialized algae-based foods should be offered. Frozen and flake plant-based foods are also readily accepted.

Special Features & Benefits

The redtail blennie is not only a visually appealing fish, but also an indispensable helper in biological algae control. It actively contributes to the stability of the aquarium, promotes water quality, and ensures a natural balance. Its lively behavior and adaptability make it an ideal inhabitant for reef aquariums.

Conclusion: Ecsenius bicolor is a peaceful, robust, and extremely useful algae eater that impresses with its contrasting coloration and active behavior. It is an excellent choice for both beginners and experienced aquarists and a valuable addition to any saltwater aquarium.