Scientific Name	Opsariichthys pachycephalus			by: Lab of Fish Ecol. and Evo., BRCAS
Author	Günther, 1868	Depth	0 - 10M
Chinese	粗首馬口鱲	Poisonous Fish	No
Family_Chinese	鯉科	Economic Fish	No
Family	F102　Cyprinidae	Edible Fish	Yes	Chinese In Mainland China	厚頭馬口魚
Max Length	16 cm	Aquarium Fish	Yes	Common Name	溪哥仔(幼魚及雌魚)、紅貓(雄)、苦槽仔、闊嘴郎、粗首鱲
Distribution in World	Taiwan [Endemic in Taiwan]	Distribution in Taiwan	North、Middle、South
Habitats	Fresh water	Holotype Locality	Taiwan
Synonyms	Zacco pachycephalus, Zacco taiwanensis
Reference	臺灣魚類誌(沈等, 1993)；臺灣淡水及河口魚類誌(陳&方, 1999)；臺灣淡水魚類-壹 鯉形目(陳＆張, 2005)  沈世傑 編 Shih-Chieh Shen ed. 1993 Wang, H.Y. etc. 1999 陳義雄,方力行 1999 陳義雄, 張詠青, 邵廣昭 2005
Specimen List	ASIZP0054186. ASIZP0057061. ASIZP0057109. ASIZP0057110. ASIZP0057992. ASIZP0058000. ASIZP0058064. ASIZP0058066. ASIZP0058067. ASIZP0058127. ASIZP0058456. ASIZP0058546. ASIZP0058551. ASIZP0062066. ASIZP0062068. ASIZP0062073. ASIZP0062075. ASIZP0062086. ASIZP0062089. ASIZP0062930. ASIZP0064641. ASIZP0064642. ASIZP0065752. ASIZP0072570. ASIZP0072571. ASIZP0074372. ASIZP0074399. ASIZP0074415. ASIZP0074420. ASIZP0074423. ASIZP0074656. ASIZP0074883. ASIZP0075002. ASIZP0801321. ASIZP0805253. ASIZP0805254. ASIZP0911321. BMNH1865.5.2.31-34Paralectotype. BMNH1865.5.2.60Lectotype. ...List all 203 records...
Barcode	2011-10-03,張家豪,CO1,100% 2011-10-03,張家豪,CO1,100%
Common Name	Taiwan chub; Taiwan freshwater minnow; Thickhead chub
Redlist Status	Not in IUCN Redlist      2012 Redlist of Fresh Water Fishes::LC
Characteristic	Head large. Snout short. Eye large, on upper side of head. Mouth large and protractile; posterior end of upper jaw reaches midline of eye. Body elongated, posterior laterally compressed; dorsal and ventral profile slightly arched. Barbels absent. Scales moderately large; lateral line complete and curved above pelvic fin origin; head naked. L.l.：48-55; dorsal fin rays：3+7; pelvic fin rays：1+7; anal fin rays：3+9. Dorsal fin origin at midline between snout tip and caudal peduncle end; pectoral fin end distant from pelvic fin origin; pelvic fin at lower side of body; anal fin rays long, the longest reaches caudal peduncle end; caudal fin forked. Dark grayish dorsally, side and belly silvery white. 10 or more vertically bluish stripes on side of spawning male.
habitats	Primary freshwater fish, prefers running water at lower and middle reaches, but also can be found in lake and backwater of rivers. The young polyphagia and turn to carnivorous when grow up.
Distribution	Endemic to western portion of Taiwan, had been introduced to eastern portion. Some adverse impacts due to introductions had been reported.
Utility	Popular with angling and aquarium (male).