What are you feeding it?? Im assuming you mean 'forktail blenny'...



"The Forktail Blenny needs a minimum tank of 30 gallons with live rock for hunting and grazing. It is best to keep only one per tank unless a breeding pair is maintained. >>>The Forktail Blenny is considered venomous and should be kept only with caution around children having tank access since it may perceive fingers as an attacker and deliver a similarly painful bite. <<<The diet should consist of finely chopped crustacean flesh, mysis and vitamin-enriched brine shrimp, as well as frozen herbivore preparations. "