Dot-lined earthworm goby (Luciogobius punctilineatus), first described by Koreeda & Motomura, 2022 is a tiny fish in the family Gobiidae (order Gobiiformes). Adults typically reach 3.30 cm in maximum length. It inhabits freshwater systems including rivers, streams, and lakes. It occurs in Subtropical waters. It is broadly omnivorous, taking invertebrates, plant matter, and detritus.
Vertebrae: 39 - 42. This species is distinguished from its congeners by the following set of characters: total anal-fin rays 12-14 (modally 13); pectoral-fin rays 8-12 (modally 10); vertebrae 16-18 + 22-24 = 39-42 (modally 17 + 23 = 40); pectoral-fin posterior margin slightly concave; pelvic fins united, forming a disc; snout relatively short, length 3.1-4.3% of SL; AAA distance twice body depth at anus, 11.4-16.9% of SL; snout length less than 34.7% of AAA distance; pre-anus length less than 85.5% of pre-anal-fin length; single poorly defined black longitudinal line along mid-lateral body region from behind pectoral fin to caudal-fin base, indistinct anteriorly (line embedded, visible through semi-transparent muscle tissue in fresh or live specimens); and black spots forming a single longitudinal row on mid-lateral body surface from behind pectoral fin to caudal-fin base (more distinct in preserved specimens) .: elongated.
Behavioural data for Dot-lined earthworm goby is currently being reviewed.
Freshwater; demersal. Subtropical
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