Stenogobius gymnopomus (Bleeker, 1853)

Stenogobius gymnopomus (Bleeker, 1853) View in CoL

Six specimens were studied, including Holotype ( RMNH 4552 About RMNH ), from Sumatra Island , West Java Island and Malaysia.

Described originally from Sumatra Island ( Indonesia), this species was cited from various other locations like India, Andaman Islands and Sumbawa Islands ( Indonesia)

( Watson, 1991). The main morphomeristic characters are given below.

D VI-I, 10; A I-10/11; C 13-14; P 16-17; PD 0-4; TRB 10-12; TRF 13-16; LS 47-52; ZZ caudal peduncle 9; ZZ D2 base 9; head length between 24 to 26 (in % of SL); preanal length 52-55 (in % of SL); BDL 17-22 (in % of SL); BDM 20-23 (in % of SL); caudal peduncle length 11-15 (in % of SL); HD1 20 to 27 (in % of SL); jaw length 8-11 (in % of SL); anal length 28 - 47 (in % of SL); second dorsal length28-46 (in % of SL); caudal peduncle depth 12-13 (in % of SL); space inter D1-D2 7 to 6-9 (in % of SL); eye diameter 4-7 (in % of SL); interorbital distance 2-5 (in % of SL); snout length 6-7 (in % of SL); interdorsal membrane distance 1 to 5 (in % of SL); pelvic length 18-24 (in % of SL); pectoral length 18-22 (in % of SL). Cheek naked, opercle naked; central pectoral base scaled or not; breast and belly naked or not; predorsal region naked to 2 scales on the anterior part to the first dorsal fin; first dorsal fin with blackish marks on the posterior half of fin near base, marking darker posterior to fifth spine ( Fig. 3 View Figure 3 ). Pores and papillae are presented in Fig. 4 View Figure 4 .

Because of the restricted number of specimens studied ( 6 specimens), sexual dimorphism for this species was not analysed.