Congrogadus

Congrogadus is a genus of ray-finned fishes, the type genus of the subfamily Congrogadinae, the eel blennies, part of the dottyback family, Pseudochromidae. The genus Congrogadus has an Indo-Pacific distribution.

==Characteristics== The species in the genus Congrogadus differ from their other genera in the subfamily Congogadinae in that they do not have a spot on their shoulder, a similar spot being located on the operculum. Their dorsal and anal fins have a higher number of rays than all the other species in the subfamily except for the species in the genus Halidesmus which can have up to 90 fin rays. Also compared to the related genera which may have three complete lateral lines, the species in Congrogadus have only have a single curtailed lateral line. In addition some species which are classified in the subgenus Congrogadoides have the gill membranes fused to the isthmus. The gill membranes of the subgenus Congrogadus are not fused while the species in that subgenus and in the third, Pilbaraichthys possess a posterior otic sensory canal pore, which is believed to assist the fish in detecting motion.