Coreoleuciscus aeruginos Song & Bang, 2015

Family:  Gobionidae (Gudgeons)
Max. size:  13.2 cm TL (male/unsexed); max.weight: 20.2 g
Environment:  benthopelagic; freshwater
Distribution:  Asia: Seomjin and Nakdong rivers in South Korea.
Diagnosis:  Dorsal soft rays (total): 10-10; Anal soft rays: 9-9; Vertebrae: 39-40. Coreoleuciscus aeruginos differs from C. splendidus by the following body coloration and shape and/or presence of black bands on dorsal, anal and caudal fin rays: bluish-green line above the luteous line (vs. golden line immediately above a luteous line that runs along a lateral line on side of body); a luteous line immediately above a black line present during the spawning season (vs. bright yellow line immediately above a violet and bluish line running along lateral line on side body during spawning season); dorsal fin with a thin and continuous band both distally and basally (vs. a thick and discontinuous distal band and a thick and continuous basal band); anal fin with thin and relatively short distal band and without basal band (vs. anal fin with quite thick and long distal dark band and short basal band); and caudal fin with with three stripes in centrosymmetric structure, a thick and continuously band distally across lobes, one pair of two thick bands separated into two lobes medially, and a thick and short one at the basal part (vs. seven bands in centrosymmetric structure, three pairs of six thin bands separated into two lobes at medial and distal-most areas and a thin basal band extending outwards (Ref. 100736). Description: Dorsal-fin rays iii, 7; anal-fin rays iii, 6; pelvic-fin rays ii, 7 (Ref. 100736).
Biology:  Usually occurs in rapids of streams (Ref. 100736).
IUCN Red List Status: Least Concern (LC); Date assessed: 13 March 2023 Ref. (130435)
Threat to humans:  harmless


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