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Description: Body thin, very long, and narrow with a small eye and a pointed snout with a terminal large mouth. Pectoral and pelvic fins long relative to the head (but short compared to the long body), extending more than halfway to the vent. Dorsal and anal-fin bases very long, caudal peduncle short, . Lightly marked along the lower body: melanophores usually in streaks at the isthmus (often missing) and at the pelvic-fin insertion, internally at the dorsal surface of the swim bladder and around the gut near the vent, and in a row along the anal-fin base, often variably present and variably paired (can occur on either side unpaired). In many individuals the surface melanophores are indistinct or some are missing. Series of transitional larvae show development of the eye from a markedly narrowed vertical oval with a flattened base, the pupil off-center dorsally, and a pronounced slant backwards to large and round. The head profile develops from a thin pointed head to a blunt snout with an almost sub-terminal mouth. Transitional larvae first develop patches of tiny iridophores on the top of the head and in a stripe behind the eye and then a scattering of large discrete melanophores on the head. Body markings include a lateral row of melanophores on each side of the gut strip along the abdomen. Melanophores develop in patches spaced out along the base of the dorsal fin, on the caudal peduncle, and at the base of the central caudal-fin rays.