Pseudogobiopsis, Koumans, 1935

Larson, Helen K., 2009, Review Of The Gobiid Fish Genera Eugnathogobius And Pseudogobiopsis (Gobioidei: Gobiidae: Gobionellinae), With Descriptions Of Three New Species, Raffles Bulletin of Zoology 57 (1), pp. 127-181 : 155

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)