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- Title
Plectranthias kojii sp. nov., a new perchlet (Perciformes: Serranidae: Anthiinae) from Okinawa, Japan.
- Authors
Koeda, Keita; Muto, Nozomu; Wada, Hidetoshi
- Abstract
Plectranthias kojii sp. nov. (Perciformes: Serranidae) is described from a single specimen [49.4 mm in standard length (SL)] collected from 150 m depth off Hamahiga-jima Island, near Okinawa-jima Island, Japan. Although the new species is most similar to Plectranthias ryukyuensis Wada, Suzuki, Senou and Motomura 2020, morphological characteristics and DNA barcoding of the former clearly differed from those of congeners. Plectranthias kojii is distinguished from P. ryukyuensis by the following combination of characters: 12 or 13 pectoral-fin rays; 10 scale rows below the lateral line; 2 supraneurals, small head (length 42.5% SL) with rounded upper profile; slightly convex in postorbital region; small eye (diameter 11.9% SL); the anterodorsal margin not protruding above the dorsal head profile; caudal fin slightly convex; fourth dorsal-fin spine long (length 20.0% SL); pre-pelvic-fin short (length 34.8% SL); pectoral fin short (length 37.0% SL); pelvic-fin spine long (length 19.6% SL); body with an arched orange band from bases of 7th to 9th dorsal-fin spines to middle of caudal-fin base; and yellowish-orange spots and blotches on the snout, cheek, jaws, nape, and spinous portion of the dorsal fin.
- Subjects
OKINAWA-ken (Japan); RYUKYU Islands; PERCIFORMES; PECTORAL fins; FISH anatomy; CONVEX domains; GENETIC barcoding; SPINE; JAWS
- Publication
Ichthyological Research, 2022, Vol 69, Issue 3, p352
- ISSN
1341-8998
- Publication type
Article
- DOI
10.1007/s10228-021-00842-1