分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Eupercaria/misc (Various families in series Eupercaria)
鱸形目 (Various families in series Eupercaria) >
Sciaenidae (Drums or croakers)
石首魚科 (Drums or croakers)
Etymology: Plagioscion: Greek, plagios = oblique + Greek, skiaina, skion = barbel, red mullet (Ref. 45335); casattii: Named for Lilian Casatti..
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 底中水层性. 熱帶
South America: Orinoco River, Venezuela.
南美洲: 奧里諾科河河，委內瑞拉。
Length at first maturity / 大小 / 重量 / 年龄
Maturity: Lm ?, range 27 - ? cm
Max length : 33.0 cm SL 雄鱼/尚未辨别雌雄; (Ref. 36888)
简单描述
检索表 | 型态特徵 | 形态测量图
背棘 (总数) : 11; 背的软条 (总数) : 31 - 36; 臀棘: 2; 臀鳍软条: 6 - 7. Body nearly uniform silvery, lighter ventrally; darker dorsally; no conspicuous spots but with diffuse dark areas along base of dorsal fin, on margin of spinous and soft dorsal fin, and hind margin of caudal fin; base of pectoral fins with a brown spot. Eye elliptical, 5.3-6.2 in HL; second anal spine length 4-6.3 (mean 5.2) in HL. Anus-anal distance 2.8-5.1 (mean 4.2) in HL. Tips of pelvic-fin rays not extending to anus. Anterior portion of dorsal fin with 10 spines, posterior with 1 and usually 33-34 soft rays. Sagitta elongate and oblong; ostium apple-shape; tip of caudal not extending to below hind margin of the ostium, postero-ventral angle rounded. Caudal fin rhomboid (Ref. 44362).
身体几乎均匀银色的, 腹部颜色较淡; 比较深色的背面; 没有显着的斑点但是有扩散的深色区域沿着背鳍基底, 在刺状与软背鳍的边缘 , 与尾鳍的后缘上; 胸鳍基底鳍有一个褐色斑点。 眼椭圆形,5.3-6.2个 HL比率; 第二臀鳍棘长度 4-6.3(意谓 5.2) HL比率。 肛门-肛门的距离 2.8-5.1(意谓 4.2) HL比率。 不被延伸至肛门的腹鳍鳍条的顶端。 背鳍有的前部 10根棘 , 在后部 1 与通常 33-34个软鳍条。 矢耳石延长与长方形; ostium 苹果-形状; 顶端尾部的不延伸至 ostium 的后缘下面, 腹面后方的角圆的。 尾鳍偏菱形.(参考文献 44362)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔鱼
南美洲: 奧里諾科河河，委內瑞拉。
Aguilera, O. and D.R. de Aguilera, 2001. A new species of croaker Plagioscion (Perciformes, Sciaenidae) from the Orinoco River Basin, Venezuela. Memoria 60(153):61-67. (Ref. 44362)
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00851 (0.00413 - 0.01752), b=3.08 (2.91 - 3.25), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.9 ±0.5 se; based on size and trophs of closest relatives
回复力 (Ref.
120179): 中等的, 族群倍增时间最少 1.4 - 4.4年 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low to moderate vulnerability (30 of 100).
