Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; demersal. Temperate
Northwest Pacific: Japan and the Uwa Sea.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 12.0 cm TL male/unsexed; (Ref. 559)
Dorsal spines (total): 11 - 13; Dorsal soft rays (total): 8 - 10; Anal spines: 1; Anal soft rays: 8 - 9. Body elongate and compressed, covered with velvety prickles. Preoperculum with 5 blunt spines. Anterior part of dorsal fin higher (2nd and 3rd spines elongate). Body dark-brown with darker mottling (Ref. 559). Isthmus without fleshy pad (Ref. 39602).
Body shape (shape guide): elongated; Cross section: compressed.
Secretive on algae rocky reefs, usually seen at night (Ref. 48635).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Masuda, H., K. Amaoka, C. Araga, T. Uyeno and T. Yoshino, 1984. The fishes of the Japanese Archipelago. Vol. 1. Tokai University Press, Tokyo, Japan. 437 p. (text). (Ref. 559)
IUCN Red List Status (Ref. 130435: Version 2025-2)
Threat to humans
Harmless
Human uses
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Special reports
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