池沼公鱼[Hypomecus olidus(Pallas)]是日本湖沼渔业的重要渔获对象,另外作为游钓的对象也倍受青睐,是一种重要鱼类.因此,在许多湖泊里为了维持、增加池沼公鱼的资源量,已开始限制捕捞、建造产卵场,或人工孵化放流等增殖事业.目前正在采取将池沼公鱼卵进行移植放流等手段.池沼公鱼的天然分布是从日本到阿拉斯加的北太平洋沿岸一带,在各地均有陆封型的池沼公鱼.在日本的天然分布是在太平洋沿岸一侧的千叶县以北,及日本海一侧的岛根县以北.由于移植和放流的结果,已在全 Hypomecus olidus (Pallas) is an important catch of fishery in lakes and marshes of Japan and is also favored as a target for sport fishing, and is an important species of fish. Therefore, in many lakes, in order to maintain and increase the pond marsh The amount of fish resources, has begun to limit the fishing, the construction of spawning grounds, or man-hatching discharge and other breeding business is currently taking the pond marsh eggs for transplantation and other means of release .Panuma marshThe natural distribution of fish from Japan to AlaskaNorth On the Pacific coast, there are landfill-type marsh-mandarin fish everywhere, and the natural distribution in Japan is north of Chiba Prefecture on the Pacific Coast and north of Shimane Prefecture on the Sea of ​​Japan. As a result of transplanting and releasing The result is already in full