We measured the sexual dimorphism in morphological traits, including the body length, head length, head width, head depth, snout length, postorbital head length, eye diameter, interorbital width, body depth, caudal peduncle length, caudal peduncle depth, caudal fin length, dorsal fin precoxal length, dorsal fin coxal length, pelvic fin precoxal length, length between pelvic fin and anal fin, body mass, carcass mass of Abbottina kiatingensis from Oujiang river, Lishui City, Zhejiang Province in reproductive season.Our results showed that the number of adult males was larger than that of females and there was no sexual dimorphism in the body length.The females with special body length were significantly shorter than the males in head length, head width, head depth, snout length, postorbital head length, caudal peduncle depth, dorsal fin precoxal length, dorsal fin coxal length and carcass mass.There was no significant sexual difference among other morphological traits.The individual fecundity was positively correlated with the body length and body mass in A.kiatingensis.A conclusion has been drawn that adult females increased the individual fecundity through increasing the individual size(body length and body mass).
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