Petroscirtes ancylodon, the Arabian fangblenny, is a species of combtooth blenny found in the western Indian ocean. The species now also occurs in Iskenderun Bay in the Mediterranean, having invaded as a Lessepsian migrant through the Suez Canal. Males of this species reaches a length of 11.5 centimetres (4.5 in) TL while females reach a maximum length of 7.9 centimetres (3.1 in) SL.