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Oncorhynchus formosanus 台灣鉤吻鮭

Scientific Name:    Oncorhynchus formosanus    
Nomenclater:    (Jordan & Oshima, 1919)
Family:    F175  Salmonidae
Holotype-Locality:    Taiko River at Saramao, Nanto, Taiwan
Habitats:    Fresh Water      
Economic Fish:     No
Habitats Depth:    0 - 5 M      
Aquarium Fish:     No
Poisonous Fish:    No      
Edible Fish:     Yes
Synonyms:    Oncorhynchus formosanus, Oncorhynchus masou formosanum, Salmo formosanus  
Reference:    Shen, S. C. (ed.) (1993). Fishes of Taiwan. Department of Zoology, National Taiwan University, Taipei. 960 p. Tzeng CS (1996). The freshwater fishes of Taiwan. Taiwan Province Department of Education. Taichung. 183 p. Chen IS and Fang LS (1999). The fres  Jordan, D. S. etc. 1919 戴永禔 1992 沈世傑 編 Shih-Chieh Shen ed. 1993 楊正雄 1997 陳義雄,方力行 1999 
Redlist Status:    2009-04-01COA, Taiwan Redlist: Critically Endangered   IUCN Redlist: Critically Endangered(CR)  
Common Name in Engulish:    Formosan landlocked salmon
Chinese Name transliteration:    
Distribution in Taiwan:    
Distribution in World:    Taiwan
Max Lenth:     40 cm
Specimen List:    
Characteristic:    Head moderately large. Mouth large and protractile, especially in spawning males; posterior end of upper jaw reaches posterior margin of eye. Body elongated, somewhat laterally compressed especially in adults; dorsal and ventral profile slightly arched. Scales small and cycloid; lateral line complete. L.l.:112-140; Dorsal soft fin rays:12-15; pelvic fin rays:9; anal fin rays:11. Dorsal fin base short, considerably equal to anal fin base; dorsal fin origin at middle between tip of snout and end of caudal peduncle; an adipose fin above end of anal fin base; pelvic fin small; caudal fin forked. Dark olive dorsally, light grayish ventrally; 9 cloudy spots along midline of side all life; 11-31 small black spots above lateral line. A subspecies of O. masau, can be distinguished by average numbers of pectoral fin ray, anal fin ray, vertebrae and spots above lateral line.
Habitats:    Landlocked salmon. Inhabit in moderately running flows and well-oxygenated water. Adults maintain territories; spawning males fight for spawners in breeding season, spawner stirs a breeding nest on riverbed by using its tail, and then lays eggs in the nes
Distribution:    Endemic to Tachia River of middle Taiwan, found in elevation higher 1500m and water temperature lower than 15oC.



Text and images are provided by The Fish Datebase of Taiwan (Biodiversity Research Center, Academia Sinica, Taiwan)