分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Environment: milieu / climate zone / depth range / distribution range
生態學
海洋 礁區魚類; 深度上下限 2 - 4 m (Ref. 57884). 熱帶
分布
國家 | FAO區域 | 生態系 | 發現紀錄 | Point map | 簡介 | Faunafri
Northwest Pacific: Ryukyu Islands, Japan.
西北太平洋: 琉球群島，日本。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 7.9 cm SL 雄魚/尚未辨別雌雄; (Ref. 57884)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
背的軟條 (總數) : 76 - 79; 臀鰭軟條: 60 - 67; 脊椎骨: 40 - 41. The species is distinguished by the following: Vertebrae 11+29-30=40-41, dorsal fin rays 76-79, anal fin rays 60-67; small eyes (1.6-2.1% SL); outer pseudoclasper moderately large, wing- shaped, slightly bent outwards; inner pseudoclasper almost free, bifurcate, with stout hook-like anterior branch and broad flap-like posterior branch; scale patch on cheek with 6-7 rows of small scales on upper cheek, 2 large scales on operculum above opercular spine; head massive, broad; otolith length to height ratio 2.1. This is the only species of the genus which combines small eyes (about 2.1% SL) with presence of scales on the operculum (Ref. 57884).
此魚種被藉著區別那在:之後 Vertebrae 11+29-30=40-41 ，背鰭鰭條 76-79, 臀鰭棘條 60-67; 小的眼 (1.6-2.1% SL); 外部的 pseudoclasper 普通大的, 翼- 形狀的, 些微地向外地彎曲; 內部的 pseudoclasper 幾乎分離的, 分叉, 藉由矮胖的鉤狀前面的分支與寬的蓋狀在後部的分支; 鱗片小區塊在上面的頰上頰部有 6-7 列的小鱗片之上, 在上面鰓蓋棘的鰓蓋上的 2個大的鱗片; 頭部大的, 寬的; 對高度比 2.1 的耳石長度. 這是聯合小的眼 (大約 2.1% SL) 的本屬的唯一的種具有在鰓蓋上有鱗片.(參考文獻 57884)
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
西北太平洋: 琉球群島，日本。
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)
IUCN 瀕危狀態 (Ref. 130435: Version 2024-1)
人類使用
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.3 ±0.5 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
![Image of Diancistrus jackrandalli (Randall\](/images/thumbnails/gif/tn_Dijac_m0.gif "Image of Diancistrus jackrandalli (Randall\")
