Taiwan earthworm goby (Luciogobius opisthoproctus), first described by Chen & Liao, 2024 is a tiny fish in the family Gobiidae (order Gobiiformes). Adults typically reach 2.80 cm in maximum length. It is diadromous, migrating between freshwater and marine environments during its life cycle. It occurs in Subtropical waters. It is broadly omnivorous, taking invertebrates, plant matter, and detritus.
Dorsal spines (total): 0; Dorsal soft rays (total): 9 - 12; Anal spines: 0; Anal soft rays: 11 - 14; Vertebrae: 41 - 43. This species is distinguished by the following set of characters: total vertebrae 41-43; absence of free pectoral-fin rays; D2 9-12 (usually 11); A 11-14 (11 or 12); pectoral-fin rays 8-12 (10 or 11); pelvic-fin length more than 50% of pectoral-fin length; AAA distance 4.2-7.2% (mean 5.7%) of SL, 72.1-129.7% (mean 99.9%) of body depth at anus; snout length 39.7-62.7% (mean 52.8%) of AAA distance; pre-anus distance 80.0-92.8% (mean 88.6%) of pre-anal-fin length; anterior-most pterygiophore of anal fin inserted behind the second haemal spine .Cross section: circular.
Behavioural data for Taiwan earthworm goby is currently being reviewed.
Marine; freshwater; brackish; demersal. Subtropical
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