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Teleostei >
Cypriniformes (Carps) >
Leuciscidae (Minnows) > Pogonichthyinae
Etymology: Rhinichthys: Greek, rhinos = nose + Greek, ichthys = fish (Ref. 45335); atratulus: From the word atratus, meaning clothed in black (Ref. 10294).
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 居於水底的. 溫帶; 0°C - 29°C (Ref. 35682); 57°N - 34°N
North America: Atlantic, Great Lakes, Hudson Bay, Mississippi River, and upper Mobile Bay drainages Nova Scotia to Manitoba, Canada and south to northern Georgia and northern Alabama, USA.
北美洲: 主要地在大西洋斜坡流域從新斯科舍省 (海的在加拿大), 對南卡羅萊那州與美國喬治亞州。 它的前亞種, R. obtusus 被主要地在密西西比河上游與俄亥俄州流域發現, 美國與在加拿大的曼尼托巴。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 12.4 cm TL 雄魚/尚未辨別雌雄; (Ref. 10294); common length : 5.7 cm TL 雄魚/尚未辨別雌雄; (Ref. 12193); 最大年齡: 3.00 年 (Ref. 12193)
背的軟條 (總數) : 8; 臀鰭軟條: 7. Rhinichthys atratulus can be diagnosed by the following characters: back and side with many brown-black specks; deep caudal peduncle; barbel in corner of mouth; groove separating snout from upper lip absent; pointed snout slightly overhangs mouth; 53-70 scales on lateral line; 7 anal rays; pharyngeal teeth 2,4-4,2. Body light brown above, black spot followed by silver spot on dorsal fin base; black stripe along side, through eye and onto snout, continuous in young, as blotches in adult; often a silver stripe above black stripe; and silver white below. Breeding male can be distinguished by having pads on upper surface of pectoral fin, yellow-white pectoral and pelvic fins, white to red stripe below black body stripe (Ref. 86798). Body stout, spindle-shaped; mouth slightly inferior, slightly oblique and extending to below nostril; pointed barbel in groove at angle of mouth. Gill rakers short, conical, widely spaced (Ref. 54725).
身體矮胖的, 紡錘形的; 嘴些微下方, 些微斜而且延伸至鼻孔下面; 尖的觸鬚有凹槽在突出部位上嘴。 鰓耙短的﹐錐形, 分開很遠.(參考文獻 54725)
Inhabits rocky runs and pools of headwaters, creeks and small rivers (Ref. 5723, 10294, 86798). Feeds on aquatic insects (Ref. 54729, 10294), diatoms and other algae (Ref. 54725). Considered as an attractive aquarium pet and propagation through artificial fertilization is practical (Ref. 54725).
棲息於河川源頭,小溪與小河的多岩石的小支流與水潭。 (參考文獻 5723,10294) 吃水生昆蟲;(參考文獻 54729,10294) 也在矽藻與其他的藻類上.(參考文獻 54725) 被當作一個吸引人的水族館寵愛，而且增殖經過人造的受精是實際的.(參考文獻 54725)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚
北美洲: 主要地在大西洋斜坡流域從新斯科舍省 (海的在加拿大), 對南卡羅萊那州與美國喬治亞州。 它的前亞種, R. obtusus 被主要地在密西西比河上游與俄亥俄州流域發現, 美國與在加拿大的曼尼托巴。
Page, L.M. and B.M. Burr, 2011. A field guide to freshwater fishes of North America north of Mexico. Boston : Houghton Mifflin Harcourt, 663p. (Ref. 86798)
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5020 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00851 (0.00376 - 0.01926), b=3.06 (2.86 - 3.26), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.1 ±0.39 se; based on food items.
回復力 (Ref.
120179): 高度, 族群倍增時間少於 15個月 (tmax=3).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
