Notes on a rare deep-sea eelpout, Melanostigma orientale, from Tosa Bay, southern Japan (Perciformes, Zoarcidae)

概要

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A single, 106.1 mm total length female specimen of the deep-sea zoarcid fish species, Melanostigma orientale, trawled from Tosa Bay was compared with the holotype and two hitherto unrecorded specimens from unknown localities. This species has been represented by only four specimens collected in Suruga Bay and Sagami Bay, central Japan. The following intraspecific variation in meristic counts of M. orientale were confirmed: 18-20+73-90=93-110 vertebrae, 86-95 dorsal fin rays, 73-80 anal fin rays, 7-8 pectoral fin rays, 8-9 caudal fin rays and 12-16 rakers on the first gill arch. The specimen from Tosa Bay possesses 110 total vertebrae, 90 caudal vertebrae, 95 dorsal and 80 anal fin rays, 7 pectoral fin rays, 16 rakers on the first gill arch, and large and slightly recurved anterior jaw teeth which differ from those of the holotype and additional specimens.
高知大学海洋生物教育研究センターの論文
1997-12-31