鱼类中有一些鱼对光照有较强的敏感性,同时,光的感觉在某些鱼类中能引起行动上的反应。例如鳗鲡自江河入海时,是回避光线的,所以它选择在夜深人静之际往大海里游去;假如一旦出现亮光,那么鳗鲡就会停止前进。相反,有许多鱼类却有明显的趋光习性,而这种趋光的习性已被捕捞者所利用。如果垂钓者对这种趋光性有所了解,也会大有益处。 Some fish in fish have a strong sensitivity to light and at the same time the light perception can cause a behavioral response in some fish species. For example, the eel from the rivers into the sea is to avoid the light, so it chose to go to the sea in the dead of night; if the light appears, then the eels will stop moving forward. In contrast, many fish have significant phototactic habits that have been exploited by the harvester. It is also good for anglers to understand this phototaxis.