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)
鱂形目 (Rivulines, killifishes and live bearers) >
Goodeidae (Splitfins)
谷鱂科 (Splitfins) > Goodeinae
Etymology: francesae: Named for Frances H. Miller (Ref. 29410).
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 居於水底的. 熱帶; 21°C - 27°C (Ref. 12468); 21°N - 20°N
North America: Teuchitlan River, Mexico.
北美洲: Teuchitlan 河，墨西哥。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 5.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 6398); 5.0 cm TL (female)
背的軟條 (總數) : 15 - 17; 臀鰭軟條: 14 - 15; 脊椎骨: 30 - 35. Males with a less prominent notch in dorsal fin; no irregular black spots on sides of body; a gray cast superimposed on gold body and gray fins. Head wedged shaped; upturned lips; proportionately larger head and orbit. Tendency to fewer lateral scales, predorsal scales and vertebrae. Male with fins larger, especially dorsal and anal fins; greater prepelvic length, head and body depths; first 6 anal-fin rays small folding into fleshy dermal pocket supported by 7th ray; dorsal fin notched, first 4-5 rays separated slightly from the rest.
在背鰭雄性有一個比較不突出凹槽; 沒有在身體側邊上的不規則的黑色斑點; 灰色的外貌在金色的身體與灰色的鰭上重疊了。 頭部楔形的; 朝上的唇; 比例上比較大的頭部與眼窩。 傾向比較少的側面鱗片，前背的鱗片與脊椎骨。 雄魚有鰭比較大的, 尤其背鰭與臀鰭; 比較大的腹鰭前的長度, 頭部與身體深度; 最初 6個臀鰭棘條小的折疊進入肉質的表皮口袋之內由第 7個鰭條支撐了; 背鰭凹槽, 與其他部分略微分開的第一個 4-5 鰭條。
An experimental fish. Pinnate diatoms (largely benthic), filamentous algae indicate that this species grazes rocks and plant surfaces along or near the bottom (Ref. 29410).
一個實驗的魚。 羽狀的矽藻 (相當底棲), 菌絲藻指出這種啃食岩石，而且植物表面沿著或在底部的附近.(參考文獻 29410)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚
Viviparous. Gestation lasts for about 55 to 60 days. Produces 10-15, rarely 20, young. Matures approximately at the fifth month.北美洲: Teuchitlan 河，墨西哥。
Kingston, D.I., 1978. Skiffia francesae, a new species of goodeid fish from Western Mexico. Copeia 1978(3):503-508. (Ref. 29410)
人類使用
漁業: 商業性; 水族館: 商業性
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01995 (0.00906 - 0.04395), b=3.01 (2.83 - 3.19), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
營養階層 (Ref.
69278): 2.3 ±0.23 se; based on food items.
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
