DESCRIPTION OF A NEW SUBGENUS AND SPECIES OF THE FISH GENUS CONGROGADUS GUNTHER FROM WESTERN AUSTRALIA (PERCIFORMES PSEUDOCHROMIDAE)

WA Museum Records and Supplements | Updated 1 decade ago

Abstract - Congrogadus winterbottomi is described from Middle Mangrove Island, West Pilbara Islands, and Exmouth Gulf in Western Australia. It is assigned to a new subgenus, Pilbaraichthys, which is distinguished from other congrogadine genera and subgenera by the following combination of characters: dorsal-fin rays 1,57-61 (usually 1,59 or 1,60); anal-fin rays 47-50 (usually 48 or 49); pelvic fins and their girdles absent; dark spot on operculum, none on shoulder; gill membranes fused ventrally, with posterior margm free from isthmus; lateral line in single, short anterodorsal section; teeth in outer row of dentary and premaxilla 14-21; and cheek with short dark bar extending from posteroventral edge of eye (at about 5 o'clock position) towards lower (anterior) tip of preopercle.