Common names from other countries
分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Cyprinodontiformes (Rivulines, killifishes and live bearers) >
Poeciliidae (Poeciliids) > Poeciliinae
Etymology: Gambusia: Gambusia: From the Cuban term, Gambusino, which means "nothing", usually in the context of a joke or a farce. Fishing for gambusinos = when one catches nothing (Ref. 45335); affinis: From the Latin word affinusmeaning related (Ref. 79012).
More on authors: Baird & Girard.
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水; 半鹹淡水 底中水層性; pH range: 6.0 - 8.0; dH range: 5 - 19; 河川洄游. 12°C - 29°C (Ref. 52055); 42°N - 26°N
North and Central America: Mississippi River basin from central Indiana and Illinois in USA south to Gulf of Mexico and Gulf Slope drainages west to Mexico. One of the species with the widest range of introductions which acquired for itself a near pan-global distribution (Ref. 1739). Several countries report adverse ecological impact after introduction.
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 5.1 cm TL 雄魚/尚未辨別雌雄; (Ref. 50932); 7.0 cm TL (female); common length : 3.9 cm TL 雄魚/尚未辨別雌雄; (Ref. 12193); 最大年齡: 3.00 年 (Ref. 796)
背棘 (總數): 0; 背的軟條 (總數): 7-9; 臀棘 0; 臀鰭軟條: 9 - 10. Origin of dorsal fin opposite 7th anal ray. Length of anal base much less than half distance from caudal. 8 horizontal scale rows between back and abdomen. Ventrals terminate immediately before anal fin. Pelvic fins reach ventrals.
Most abundant in lower reaches of streams (Ref. 44091). Adults inhabit standing to slow-flowing water; most common in vegetated ponds and lakes, backwaters and quiet pools of streams. Found frequently in brackish water (Ref. 5258). Pelagic and surface predatory fish (Ref. 94816). Feed on zooplankton, small insects and detritus (Ref. 5258, 10294). Used as live food for carnivorous aquarium fishes. Viviparous (Ref. 5258, 30578). Effective in mosquito control and widely introduced, but found to compete with indigenous fish and to upset the ecological balance (Ref. 6351).
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
The species is viviparous (Ref. 5258). Internal fertilization is possible because the anal fin of the male is modified into a copulatory organ. The females carries about 30 alevins and gestation lasts for a period of 24 days (Ref. 6348) to a month (Ref. 30578).
Page, L.M. and B.M. Burr, 1991. A field guide to freshwater fishes of North America north of Mexico. Houghton Mifflin Company, Boston. 432 p. (Ref. 5723)
CITES (Ref. 128078)
Not Evaluated
人類使用
漁業: 低經濟; 水族館: 商業性
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合作者照片Stamps, Coins Misc.聲音神經毒速度泳型鰓區Otoliths腦重體重比眼睛色素
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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=0.00851 (0.00691 - 0.01048), b=3.13 (3.07 - 3.19), in cm Total Length, based on LWR estimates for this species (Ref.
93245).
營養階層 (Ref.
69278): 3.1 ±0.2 se; based on diet studies.
回復力 (Ref.
120179): 中等的, 族群倍增時間最少 1.4 - 4.4年 (K=1.20; tmax=3; Fec=10-60).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (38 of 100).
