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Description. As for genus except as follows. Total elements in dorsal fin 36 - 43 (mean = 39.2); total elements in anal fin 31 - 36 (mean = 33.1), first element segmented, or segmented and branched; pectoral-fin rays 17 - 20 (mean = 18.4); anal-fin pterygiophores preceding the first hemal spine (AP) 4 - 7 (mean = 5.4); caudal vertebral count 18 - 22 (mean = 20.2); SL / TL 0.794 - 0.891 (mean = 0.824); pelvic-fin length (PEL) / HL 0.311 - 0.615 (mean = 0.494); predorsal length / SL 0.241 - 0.363 (mean = 0.287). Scales only on posterior 25 - 30 % of body, remainder of body and head lacking scales. 18 - 27 teeth on outer row of upper jaw; 12 - 28 teeth on outer row of lower jaw. Jaws terminating posteriorly at the vertical just anterior to posterior naris. Anterior nares much closer together than posterior nares. Color when fresh. No fresh specimens were available. Bleeker (1852) stated that his specimen had a greenish body with yellowish fins. Roxas and Ablan (1940) described Nudagobioides monserrati as yellowish in life. The photograph of a presumably freshly dead Brachyamblyopus (= Caragobius) urolepis in Kottelat et al. (1993) depicts a bluish gray head, a creamy white body, the pectoral-fin base blackish blue, and the fins translucent. Color in alcohol. Head and body uniformly tannish brown with translucent fins. Some specimens with a brownish black area along posterior edge of pectoral-fin base; the color derives from a prominent blood vessel. Preserved specimens were uniformly yellowish white according to Smith and Seale (1906), whereas Hora (1923) stated that the body was olivaceous gray with whitish fins. Herre (1927) said that preserved specimens of Caragobius typhlops had a bluish gray head and yellowish body, which became whitish on belly and underside of head, and yellowish gray posteriorly. Brachyamblyopus olivaceous had a dusky olive-brown body, slightly pale head, and yellowish fins (Herre, 1927). As described by Fowler (1935), Caragobius geomys was dra