Teleostei (teleosts) >
Acropomatiformes (Oceanic basses) >
Pempheridae (Sweepers)
Etymology: Pempheris: Greek, pempheris = the name of a fish (Ref. 45335); familia: Name from Greek 'familia' means ‘‘family’’; the Ogasawara Islands include ca. 30 islands, many of them having been given family-like names; for example, Chichi-jima = father island, Haha-jima = mother island, Ane-jima = older sister island. Ototo-jima, where the type specimens were collected, and Ani-jima, where the underwater photographs were taken, refer to younger and older brothers, respectively.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; benthopelagic; depth range 10 - 16 m (Ref. 123196). Subtropical
Northwest Pacific: Japan (Ogasawara Is.).
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 15.3 cm SL male/unsexed; (Ref. 123196)
Short description
Identification keys | Morphology | Morphometrics
Dorsal spines (total): 6; Dorsal soft rays (total): 9 - 10; Anal spines: 3; Anal soft rays: 35 - 36; Vertebrae: 25. This species is distinguished by the following characters: lateral and ventral body scales are strongly ctenoid, adherent, with distinct basal and distal portions; abdomen cross-sectional outline U-shaped; a large ventral fenestra between coracoid and cleithrum; dorsal-fin soft rays 10; anal-fin soft rays 35-36; pored lateral-line scales 84-88; scale rows above lateral line 14-15; predorsal scales 50-55; circumpeduncular scales 26. Colouration: body orange copper; blackish blotch on fins is limited to tip of dorsal, anal and caudal fins; a distinct blackish blotch on pectoral-fin base (Ref. 123196).
Schools in underwater rock recesses in groups of up to ca. 10 individuals, associated with very large numbers of Pempheris schwenkii being observed in the same rock recesses (Ref. 123196).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Koeda, K. and H. Motomura, 2017. A new species of Pempheris (Perciformes: Pempheridae) endemic to the Ogasawara Islands, Japan. Ichthyol. Res. 65(1):21-28. (Ref. 123196)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Threat to humans
Harmless
Human uses
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Internet sources
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01380 (0.00591 - 0.03225), b=3.02 (2.83 - 3.21), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.5 ±0.5 se; based on size and trophs of closest relatives
Resilience (Ref.
120179): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
