Review Of The Gobiid Fish Genera Eugnathogobius And Pseudogobiopsis (Gobioidei: Gobiidae: Gobionellinae), With Descriptions Of Three New Species Author Larson, Helen K. text Raffles Bulletin of Zoology 2009 2009-02-28 57 1 127 181 journal article 10.5281/zenodo.5341767 2345-7600 5341767 D08EA231-8304-49FD-A5F6-CFA37323950F Key to species of Pseudogobiopsis 1 Preopercular pores absent, pores on top of head present or absent .................................................................................... 3 – Preopercular pores present, pores on top of head always present ................................................................................. 2 2 Dorsal rays I,7, and anal rays I,6–7; 15–16 pectoral rays; body with 12–13 narrow vertical blackish lines; no elongate first dorsal fin spines .................................................... P. tigrellus ( Nichols, 1951 ) (freshwater, Papua New Guinea ) – Dorsal and anal rays modally I,6; 16–19 pectoral rays; body with five narrow dark blotches along midside, several short dark bars radiate from lower edge of eye; first dorsal fin spine usually greatly elongate, especially in males ...... P. oligactis ( Bleeker, 1875 ) (freshwater; Thailand , Malaysia , Singapore , Borneo, Indonesia ) 3 Headpores present; pectoral rays 17–19; cheeks, preorbital and upper lip crossed with rows of irregular, oblique, distinct black lines ............. P. festivus , new species (freshwater; Sarawak ) – Head pores absent; pectoral rays 13–16; side of head with dark spots and blotches, forming two broad bars, one across preorbital and one to end of jaws ..................... P. paludosus ( Herre, 1940 ) (freshwater; Kalimantan, Malaysia , Sumatra)