First record of an agonid fish, Bathyagonus nigripinnis (Pisces: Teleostei), from Japan

• Published in: Gyoruigaku zasshi Vol. 46; no. 2; pp. 105 - 108
• Main Authors: Imamura, H. (Hokkaido Univ., Hakodate (Japan). Faculty of Fisheries), Kitagawa, D
• Format: Journal Article
• Language: Japanese; English
• Published: The Ichthyological Society of Japan 30.11.1999
• Subjects: Bathyagonus nigripinnis; CHALUTAGE; COTTOIDEI; DISTRIBUCION GEOGRAFICA; DISTRIBUTION GEOGRAPHIQUE; GEOGRAPHICAL DISTRIBUTION; IDENTIFICACION; IDENTIFICATION; Marine; NORTHWEST PACIFIC; PACIFICO NOROESTE; PACIFIQUE NORD OUEST; PESCA A LA RASTRA; Pisces; Teleostei; TRAWLING; INW, Japan, Honshu, Miyagi Prefect
• ISSN: 0021-5090; 1884-7374
• DOI: 10.11369/jji1950.46.105

On 15 April 1998, a single specimen of an agonid fish (153 mm SL, sex unknown) was collected from the western North Pacific, 37°59'N, 142°09'E (off Miyagi Pref., Honshu, Japan), at 700 m depth (3.4° bottom temperature).This specimen is identified with Bathyagonus nigripinnis Gilbert, owing to the agreement of following characters with diagnosis of the species: first preopercular spine with a supplementary spine, no barbels on mandible, lower jaw projecting forward beyond upper jaw, lachrymal with serrated ridge and margins, 45 lateral line plates and all fins being bluish black, although the minor differences, which can be regarded as the intraspecific variation, between present specimen and previous descriptions of B. nigripinnis were also recognized in the numbers of the dorsal fin ray, caudal fin ray and middorsal plate, and lengths of head and pectoral fin.This record represents a first occurrence of this species from Japan.