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Dusky smooth-hound
The dusky smooth-hound or smooth dogfish (''Mustelus canis'') is a species of houndshark, and part of the family Triakidae.〔 This shark is an olive grey or brown in color, and may have shades of yellow or grayish white. Females live to 16 years and males have a lifespan of 10 years. ''Mustelus canis'' was the first shark recognised to have viral infections.
==Size and growth==
Length for the dusky smooth-hound is up to 1.5 m (5.0 ft), with a maximum weight of 12 kg (27 lb). Dusky smooth-hound sharks reach maximum size at seven or eight years of age. Average size of this shark is around 1.2 m (4 ft). This species grows quickly, with males reaching maturity at two to three years of age, and females at four to five years of age.
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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