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Equulites ryukyuensis Kimura & Suzuki, 2023 Okinawan whip-fin ponyfish |
| Family: | Leiognathidae (Slimys, slipmouths, or ponyfishes), subfamily: Gazzinae | |||
| Max. size: | 9.6 cm SL (male/unsexed) | |||
| Environment: | demersal; marine | |||
| Distribution: | Northwest Pacific: Japan. | |||
| Diagnosis: | This species is distinguished by the following set of characters: body depth 35-45% SL, 126-167% HL; posterior margin of adipose eyelid not incised (similar to E. rivulatus); upper branch of postorbital canal is short, just reaching to or very slightly extending beyond posterior margin of preopercle (similar to E. berbis); anterior tip of scaly area on breast just reaching to vertical through junction of interopercle and subopercle at margin of operculum; interspace of pelvic keels naked; scale rows above and below lateral line 11-17 and 17-24, respectively (some of both 29-38); scale rows between lowest base of pectoral fin and pelvic-fin insertion 8-9; markings on anterior dorsolateral body comprised of short wavy lines or oblique lines; second anal-fin spine short, not extending beyond base of fifth soft ray (Ref. 130900). | |||
| Biology: | ||||
| IUCN Red List Status: | Not Evaluated (N.E.) Ref. (130435) | |||
| Threat to humans: | harmless | |||