分類 / Names
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Eupercaria/misc (Various families in series Eupercaria) >
Labridae (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
生態学
海 底生の漂泳性; 深さの範囲 7 - 18 m (Ref. 26794). Tropical
Eastern Central Pacific: known only from O'ahu, Hawaiian Islands.
サイズ / 重さ / 年齢
Maturity: Lm ? range ? - ? cm
Max length : 9.4 cm SL オス/雌雄の選別がない; (Ref. 26794)
背面の脊椎 (合計) : 9; 背鰭 (合計) : 12; 肛門の骨: 3; 臀鰭: 12; 脊つい: 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).
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).
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 幼生
Oviparous, distinct pairing during breeding (Ref. 205).
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)
Human uses
用具
特記事項
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インターネットの情報源
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).
栄養段階 (Ref.
69278): 3.3 ±0.4 se; based on size and trophs of closest relatives
回復力 (Ref.
120179): 高い, １５か月以下の倍増期間の最小個体群 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
