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Western Pacific: Japan (Ryukyu Is.), Taiwan to northern Philippines, southwards to about 10°N. Further south, across the equator, iti is replaced by Diancistrus alleni.
ขนาด / น้ำหนัก / อายุ
วัยเจริญพันธุ์: Lm? range ? - ? cm Max length : 7.0 cm SL เพศผู้/กระเทย; (Ref. 559)
เงี่ยงครีบหลัง (รวม) : 0; ก้านครีบอ่อนที่หาง (รวม) : 74 - 85; เงี่ยงครีบก้น: 0; ก้านครีบอ่อนที่ก้น: 58 - 69; สัตว์มีกระดูกสันหลัง: 43 - 45. Diagnosis: This species is distinguished by the following: Vertebrae 11+32-34=43-45, dorsal fin rays 74-85 (usually >77), anal fin rays 58-69, D/V 6 (rarely 7); eyes moderately large (2.4-3.4% SL); outer pseudoclasper with hook-shaped extension oriented backward at 90° angle and slightly bent outwards, with a rounded tip; inner pseudoclasper short, joined to outer pseudoclasper anteriorly, with supporter, with small hook and wide thin flap at its base; scale patch on cheek with 5-6 scale rows on upper cheek, scales on operculum only above opercular spine, 3-7 scales in 2 rows; head profile slender, broad; otolith length to sulcus length about 2.0, sulcus not inclined (Ref. 57884).
Body shape (shape guide): elongated; Cross section: compressed.
Rare species, known from a single male specimen (Ref. 34024). Solitary inhabitant of coral reef crevices to at least 20 m depth, cryptic (Ref 90102).
Schwarzhans, W., P.R. Møller and J.G. Nielsen, 2005. Review of the Dinematichthyini (Teleostei, Bythitidae) of the Indo-West-Pacific. Part I. Diancistrus and two new genera with 26 new species. The Beagle, Records of the Museum and Art Galleries of the Northern Territory 21:73-163. (Ref. 57884)
สถานะบัญชีแดงของ IUCN (Ref. 130435: Version 2025-2 (Global))
