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North America: Atlantic Slope from St. Lawrence River drainage in Quebec, Canada to upper Roanoke River in North Carolina, USA (absent in most of New England; present in Connecticut River, Vermont based on single record); Lake Ontario drainage in Ontario, Canada and New York, USA. Also present in upper New River drainage in West Virginia and Virginia, USA where may be based on introduction. 北美洲: 從在加拿大魁北克的聖勞倫斯河流域到北卡羅萊那州的 Roanoke 河上游的大西洋斜坡; 在加拿大安大略省與美國的紐約州的安大略湖流域。 也在新河上游流域在西維吉尼亞與美國維吉尼亞, 在那裡它相信已經被引入。
大小 / 重量 / 年齡
成熟度: Lm? range ? - ? cm Max length : 16.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 86798); common length : 10.8 cm TL 雄魚/尚未辨別雌雄; (Ref. 12193); 最大年齡: 2.00 年 (Ref. 12193)
Exoglossum maxillingua resembles tonguetied minnow, E. laurae, but can be distinguished by the presence of much larger fleshy lobe on each side of lower jaw, well separated from central bony plate and followed by another fleshy lobe on underside of head, and by absence of barbel near corner of mouth (Ref. 86798). Body shape (shape guide): fusiform / normal.
Adults inhabit rocky pools and runs of creeks and small to medium rivers. Usually found in quiet water near boulders. Males construct large circular or rectangular nests by piling pebbles carried in the mouth (Ref. 5723, 86798). Adults feed on insects and mollusks (Ref. 54729). Migratory behaviour is undetermined (Ref. 126106).
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)
