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smallmouth buffalo
The smallmouth buffalo (''Ictiobus bubalus'', from the Greek for "bull-fish" and "buffalo") is a Cypriniformes fish species found in the major tributaries and surrounding waters of the Mississippi River in the United States as well as some other water systems where it has been introduced. It is a stocky fish like its relatives the bigmouth buffalo (''Ictiobus cyprinellus'') and the black buffalo (''Ictiobus niger''), although the smallmouth buffalo's mouth is located ventrally like other Catostomidae species while the bigmouth buffalo's mouth is terminal and opens forward, and the smallmouth buffalo's eyes are significantly larger than those of the black buffalo. These three species are superficially similar to the common carp (''Cyprinus carpio''), but all lack the characteristic barbels.
==Physical characteristics==
The coloration of smallmouth buffalo ranges from shades of gray to brown and coppery green dorsally and pale yellow to white ventrally. Fin colors match the portion of the body they attach to and are generally darker towards the tips. They are characteristically stocky, having a hump that rises up from where the operculum sits. Pectoral fins protrude ventrally like the anal fins, the caudal fin has even lobes, and the dorsal fin protrudes from the top of the hump to a blunt point then shortens and runs the remaining length of the body to the base of the tail. Average adults reach a length of around with some specimens reaching as much as .
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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