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The white perch (''Morone americana'') is not a true perch but is, rather, a fish of the temperate bass family, Moronidae, notable as a food and game fish in eastern North America. In some locales it is referred to incorrectly as "silver bass". The name "white perch" is sometimes applied to the white crappie. Generally silvery-white in color, hence the name, depending upon habitat and size specimens have begun to develop a darker shade near the dorsal fin and along the top of the fish. This sometimes earns them the nickname "black-back". White perch have been reported up to in length and weighing . Although favoring brackish waters, it is also found in fresh water and coastal areas from the St. Lawrence River and Lake Ontario south to the Pee Dee River in South Carolina, and as far east as Nova Scotia. They are also found in the lower Great Lakes, Finger Lakes, Long Island Sound and nearby coastal areas, Hudson and Mohawk River system, Delaware Bay and Chesapeake Bay. It is also found occasionally in small land-locked lakes and ponds. The raw meat is of a somewhat pinkish hue, but when cooked, it is white and flaky. At times, a parasite known as ''Lironeca ovalis'' is located in the gills. They are only known to reduce the growing rate of white perch. ==Diet== White perch are known to eat the eggs of many species native to the Great Lakes, such as walleye and other true perches. At times, fish eggs are 100% of their diet. They prefer to eat small minnows like mud minnows and fathead minnows. In the Chesapeake Bay, white perch commonly prey upon grass shrimp, razor clams, and bloodworms which are all common to the region. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「white perch」の詳細全文を読む スポンサード リンク
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