Meiacanthus atrodorsalis is a small marine fang blenny recognized for its bright yellow body, dark dorsal shading, elegant swimming style, and specialized venomous fangs used mainly for defense. Unlike many rock-perching blennies, it often swims actively in the water column while also using crevices and rockwork for shelter, giving reef aquariums a lively but refined presence. Although Meiacanthus atrodorsalis is generally peaceful and adaptable in a stable marine aquarium, it should be housed with non-aggressive tankmates, secure hiding places, clean water, and a varied diet of finely sized meaty and prepared foods to support its natural behavior, health, and long-term ornamental appeal.
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