This website uses cookies to enhance your browsing experience and ensure the functionality of our site. For more detailed information about the types of cookies we use and how we protect your privacy, please visit our Privacy Information page.
×
Cookie Settings
This website uses different types of cookies to enhance your experience. Please select your preferences below:
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.
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). Body shape (shape guide): elongated. 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).
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)
系統發育多樣性指數 (參考文獻 82804): PD50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00661 (0.00269 - 0.01622), 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 (參考文獻 69278): 3.3 ±0.5 se; based on size and trophs of closest relatives
回復力 (參考文獻 120179): 高度, 族群倍增時間少於 15個月 (Preliminary K or Fecundity.).
釣魚的脆弱性 (Ref. 59153): Low vulnerability (10 of 100). 🛈
