55730 Opeatogenys gracilis (Canestrini, 1864) Gobiesocidae Clingfishes and singleslits Lepadogastrinae Gobiesociformes Teleostei Endemic in Mediterranean Sea and adjacent coast of Portugal (Ref. 97133). 39 n 8 w Opeatogenys gracilis 5 - 6 m 36 n 7 w 2001 Opeatogenys gracilis