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Teleostei >
Characiformes (Characins) >
Characidae (Characins; tetras) > Stethaprioninae
Etymology: Astyanax: The name of Astyanax, Hector´s son in the Greek mythology (Ref. 45335).
More on author: Günther.
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水; 半咸淡水 底中水层性. 熱帶; 20°C - 37°C (Ref. 36880)
Central America: lower Rio Papaloapan and Colima, Mexico south to some places in Central America (Ref. 30499), extending to the Rio Cocle del Norte and Rio Tabasara in Panama (Ref. 36880).
中美洲: Rio Papaloapan 下游與 Colima, 墨西哥南至在被在巴拿馬延伸至 Rio Cocle del Norte 與 Rio Tabasara 的中美洲 (參考文獻 30499) 的一些地方.(參考文獻 36880)
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 7.5 cm SL 雄鱼/尚未辨别雌雄; (Ref. 30499); 12.0 cm SL (female)
Differs from A. nasutus and A. orthodus by its distinct humeral blotch and intermediate body depth. Sides and belly silvery over pearl white merging to a greenish brown back; in preserved specimens, a gray band runs from the humeral mark to the caudal peduncle which has a jet black rhomboidal mark extending to the tip of the middle caudal rays; transparent fins with minimal dark pigment; usually first rays of anal and sometimes dorsal and caudal fins with red or yellow pigment (Ref. 36880).
用它的明显肩部斑块与中间的体高有别于 A. nasutus 与 A. orthodus 。 对一个绿褐色的背面侧边与腹面银色的铅白合并之上; 在保存的标本中，一条灰色的条纹从对有一个延伸至中央尾部的鳍条的顶端的墨黑色长菱形的标志的尾梗的肱骨标志; 透明鳍有最小的深色; 通常第一个鳍条肛门的与有时背鳍与尾鳍鳍有红色或黄色的有颜色.(参考文献 36880)
Inhabits all types of rivers and streams, from swift water to swamps and stagnant pools (Ref. 36880). Tolerates brackish water at sea level to small mountain brooks at 1000 m elevation (Ref. 36880). Forms schools over any type of substrate (Ref. 36880). Feeds on algae, seeds, leaves, aquatic and terrestrial insects and fish fry of any species (Ref. 36880). Spawns during most of the year at some sites or seasonally in other places (Ref. 36880).
从湍急的水域到沼泽与污浊的水池, 栖息于所有类型的河川与溪流。 (参考文献 36880) 在海平面到小的在 1000 公尺海拔的山地溪流容忍半淡咸水。 (参考文献 36880) 在任何类型的底部之上形成鱼群。 (参考文献 36880) 吃藻类，种子，树叶，水生与陆栖的昆虫与任何种的鱼苗。 (参考文献 36880) 在一些位置产卵于全年大部分时间或季节性地在其他的地方中.(参考文献 36880)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔鱼
中美洲: Rio Papaloapan 下游與 Colima, 墨西哥南至在被在巴拿馬延伸至 Rio Cocle del Norte 與 Rio Tabasara 的中美洲 (參考文獻 30499) 的一些地方.(參考文獻 36880)
Bussing, W.A., 1998. Peces de las aguas continentales de Costa Rica [Freshwater fishes of Costa Rica]. 2nd Ed. San José Costa Rica: Editorial de la Universidad de Costa Rica. 468 p. (Ref. 36880)
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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=0.01259 (0.00700 - 0.02264), b=3.10 (2.95 - 3.25), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 2.7 ±0.34 se; based on food items.
回复力 (Ref.
120179): 高度, 族群倍增时间少于 15个月 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
