Cynoglossus quadrilineatus

Cynoglossus quadrilineatus, the fourlined tonguesole, is a species of tonguefish native to the Indian Ocean from Pakistan to the western Pacific Ocean where it occurs from Japan to northern Australia. It can be found in marine and brackish waters in estuaries and coastal waters out to the continental shelf at depths of from. This species can reach a length of SL though most do not exceed SL. It is important in local commercial fisheries.

Taxonomic revision

This species was previously known as C. bilineatus, however research by Maurice Kottelat has determined that Lacépède's description of Achirus bilineatus was taken from materials that derived directly from Bloch's description of Pleuronectes bilineatus and thus renders Lacépède's A. bilineatus and thus C. bilineatus as junior synonyms of Bloch's Pl. bilineatus. Thus the earliest available name for this particular species becomes Bleeker's Plagusia quadrilineata.