分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Eupercaria/misc (Various families in series Eupercaria)
鱸形目 (Various families in series Eupercaria) >
Labridae (Wrasses)
隆頭魚科 (Wrasses) > Xyrichtyinae
Etymology: Ammolabrus: Greek, ammos = sand + see Labrus; dicrus: From the Greek dikros, forked, in reference to the forked caudal fin..
More on authors: Randall & Carlson.
Environment: milieu / climate zone / depth range / distribution range
生態學
海洋 底中水層性; 深度上下限 7 - 18 m (Ref. 26794). 熱帶
分布
國家 | FAO區域 | 生態系 | 發現紀錄 | Point map | 簡介 | Faunafri
Eastern Central Pacific: known only from O'ahu, Hawaiian Islands.
中太平洋東部: 已知只來自 O'ahu ，夏威夷群島了。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 9.4 cm SL 雄魚/尚未辨別雌雄; (Ref. 26794)
背棘 (總數) : 9; 背的軟條 (總數) : 12; 臀棘: 3; 臀鰭軟條: 12; 脊椎骨: 25. Flexible anal fin spines; 19 or 20 + 5 or 6 pored lateral line scales with single horizontal tubule, ending in a pore; scales thin and rhomboidal, those of thorax and anterior abdomen smaller than those of side of body; head naked except for 2 small scales dorsally on opercle and diagonal row of 5 partially embedded scales behind eye; no median predorsal scales; 3 small median prepelvic scales; anterior third of prepelvic region naked; branchiostegal rays 6; upper jaw strongly protrusible, median process of premaxilla extending to above anterior pupil edge; body moderately elongate, the depth 4.2-4.45 in SL; dorsal part of head from front of snout to origin of dorsal fin with a fleshy median ridge, the interorbital space high and triangular when viewed from the front; interorbital space narrowest anteriorly; caudal fin small, 1.45-1.65 in head length; pelvic fins small, 2.2-3.05 in head length (Ref. 26794).
柔韌有彈性的臀鰭棘; 19 或 20+5 或 6條有細孔的側線鱗片有被末端形成一個孔的單一水平的細管; 鱗片細而長菱形的, 比身體側邊的小的胸的與前面的腹部; 頭部裸露的除了 2個小鱗片在鰓蓋與斜線列背面上 5 部份地深入的鱗片在後眼; 沒有中央的前背鱗片; 3個小的中央腹鰭前的鱗片; 腹鰭前區域的前三分之一裸露的; 鰓條骨 6; 上頜強烈能伸展, 延伸至前面的瞳孔邊緣上方的前頜骨的中動脈突起; 身體中等細長的, 深度 4.2-4.45 分之一標準體長; 從吻部前面到背鰭起點的頭部的背部部份具有一個肉質的中央脊，眼間隔高而三角形的何時從前面看; 眼間隔狹窄的前面地; 尾鰭小的,1.45-1.65 分之一頭長; 腹鰭小的,2.2-3.05 分之一頭長.(參考文獻 26794)
Adults are found over open sand bottom, in small, swift-swimming schools (Ref. 26794). Feed on zooplankton above the substratum (Ref. 26794, 58466). Oviparous, distinct pairing during breeding (Ref. 205).
發現在開放的砂質底部上., 在小的, 快速游動的魚群.(參考文獻 26794) 吃在下層土壤上面的浮游動物。 (參考文獻 26794,58466)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚
Oviparous, distinct pairing during breeding (Ref. 205).中太平洋東部: 已知只來自 O'ahu ，夏威夷群島了。
Parenti, P. and J.E. Randall, 2000. An annotated checklist of the species of the labroid fish families Labridae and Scaridae. Ichthyol. Bull. J.L.B. Smith Inst. Ichthyol. (68):1-97. (Ref. 35918)
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00676 (0.00275 - 0.01660), b=3.05 (2.84 - 3.26), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.3 ±0.4 se; based on size and trophs of closest relatives
回復力 (Ref.
120179): 高度, 族群倍增時間少於 15個月 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
