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spotted gar
The spotted gar (''Lepisosteus oculatus'') is a primitive freshwater fish of the family Lepisosteidae, native to North America from the Lake Erie and southern Lake Michigan drainages south through the Mississippi River basin to Gulf Slope drainages, from lower Apalachicola River in Florida to Nueces River in Texas, USA. It has a profusion of dark spots on its body, head, and fins. Spotted gar are long and have an elongated mouth with many teeth used to eat other fish and crustaceans. They grow to in length and weigh on average, making it the smallest of the gars. The name ''Lepisosteus'' is Greek for "bony scale". Habitat for spotted gar is clear pools of shallow water in creeks, rivers, and lakes.
==Description==
The spotted gar ''Lepisosteus oculatus'' is a part of the gar family (Lepisosteidae). They are notable for being
one of the few extant fish species with ganoid scales. They have been known to hybridize with (and look similar to) Florida gar. It occurs in quiet, clear pools and backwaters of lowland creeks, small to large rivers, oxbow lakes, swamps, and sloughs. It occasionally enters brackish waters.
The fish is a voracious predator, feeding on various kinds of fishes and crustaceans. The lifespan for ''L. oculatus'' varies between males and females. The maximum lifespan for a gar is 18 years. Males mature at the age of two or three, whereas females mature at three or four years old.〔Murie DJ, Parkyn DC, Nico LG, et al. (2009). Age, differential growth and mortality rates in unexploited populations of Florida gar, an apex predator in the Florida Everglades. ''Fisheries Management and Ecology''. 16:315-322.〕 Females on average are known to be larger and live longer than the males. Females also have less annual mortality rates.〔
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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