Description
The Bicolor Blenny (Ecsenius bicolor) is a popular saltwater aquarium fish known for its distinctive two-toned coloration, typically blue or dark brown in the front half and orange or yellow in the back. They are relatively hardy, peaceful, and have engaging personalities, making them a good addition to many reef aquariums.
Key characteristics:
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Appearance:
The most prominent feature is the color division, with the front half of the body displaying a blue to dull brown hue, while the posterior half is orange or yellow. Males may exhibit more vibrant colors, especially when breeding.
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Size:
They typically grow to about 4 inches (10 cm) in length.
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Temperament:
Generally peaceful, but can be territorial towards other blennies, gobies, and dartfish in smaller tanks.
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Habitat:
Found in Indo-Pacific reefs, they are bottom-dwelling fish, often found among rocks and crevices.
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Diet:
Bicolor Blennies are primarily herbivores, consuming algae and plant matter. They will also graze on algae growing in the aquarium and should be offered a varied diet including algae-based foods.
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Reef Compatibility:
They are generally considered reef safe, but may nip at clams or large polyp stony corals in smaller setups or when underfed.
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Aquarium Requirements:
A tank of at least 30 gallons is recommended, with plenty of rocks for perching and hiding.
In aquariums:
Bicolor Blennies are known for their active and curious personalities, often seen hopping from rock to rock, exploring their environment. They are a great addition to larger reef tanks where they can help control algae growth and provide entertainment with their antics.
