Pisces, Gobiiformes, Gobiidae, Ctenogobius boleosoma (Jordan & Gilbert, 1882): first record for Maranhão state, northeastern Brazil

This study presents Ctenogobius boleosoma from the São Luis estuarine region, the first record from the state of Maranhão, northeastern Brazil. This species may have gone unrecorded from Maranhão due to the difficulties in collecting gobies by the usual sampling methods, such as gill nets, corking nets, and longlines, even when using nets with an appropriate mesh size.