Pholidichthys leucotaenia grow to almost , but never leave the tunnels to feed. They frequently take in mouthfuls of juveniles and spit them out again. An inspection of adult stomachs showed only a green slime. Pholidichthys leucotaenia Pholidichthys leucotaenia, commonly known as the convict blenny/goby or the engineer blenny/goby, is a marine fish from the west-central Pacific Ocean. It is neither a blenny nor a goby, but is in fact one of two species in the family Pholidichthyidae. A small eel-shaped fish, it can grow up to in length. Juveniles resemble the striped catfish "Plotosus lineatus", which is venomous, having a black
Pinchuk's goby Pinchuk's goby Pinchuk's goby ("Ponticola cephalargoides") is a species of goby native to the Black Sea and the Sea of Azov. The body of adults is prolonged, not very high. Only juveniles have high and short body. Сaudal peduncle is very high (highest between al representatives of genus "Ponticola"), short and flattened from sides (its high is equal its length). The scales on the caudal peduncle are not very big. Head is flattened from sides, snout profile is round, cheeks are round. Superior lip is broad, relatively short. Premaxilla short (especially in juveniles), with sparse strong lips. First dorsal fin