fish的生活习惯（要英语的也要中文）

fish的生活习惯（要英语的也要中文）
fish的生活习惯（要英语的也要中文）

fish的生活习惯（要英语的也要中文）
鱼在水下四处游动,其主要目的就是觅食,因为这是它们赖以生存的唯一手段,鱼又是变温动物,它的体温随着水温变化而变化,所以说不同季节的水温变化都很大程度上限制了鱼的活动范围.
鱼在不同季节有不同的活动范围,就是在一天里它有活动地点也在不时变更,这里面有食物、水温变化带来的影响,同时人为干扰也不容忽视,因为有些人水域钓鱼人多、旅游的人也多,鱼在此环境生存,抗钓本能增强.同时也变得异常警觉.
鱼在觅食时受天气影响也是比较大,天气闷热、气压低,鱼就会出现厌食现象,较大的鱼就会躲在水里不吃不动；反之,水温过低,鱼的代射功能减缓,它也会拒食,当水温适宜、溶氧充足,特别是夏季雨后,鱼儿就会活动异常,觅食积极主动,咬钩率成倍提高,当有的地方有食物时,鱼儿就会通过特有的方式互传信息,趋之若骛前去觅食,而水库一旦放水,水位迅速下降,鱼儿就会表现的惊恐不已,躲在较深的水里很少进食,这些也是鱼的习性特点.
总之,鱼类在生命活动中有一种同期性、定向性和群体性的迁徙活动习性,我们把这种现象称之为洄游.洄游是一种现象,鱼类正是凭借这种活动满足它在某个生活时期需要的外部条件,使它的种群繁衍得到可靠的保证.鱼的洄游主要有四种：生殖洄游、索饵洄游、趋暖洄游、越冬洄游.我们在钓鱼中经常发现,春天鲤鱼、鲫鱼、鲇鱼等鱼种从深水来到浅水交尾；夏季雨后水库里的鲤鱼会溯流到上游进水口附近觅食；仲秋以后鱼又从浅水来到深水越冬.以上这些现象都在鱼的洄游习性范畴之内.
Fish swimming around under water,its main purpose is to look for food because it is their only means of survival,fish are cold-blooded animal,its body temperature as the water temperature changes,so that the different seasons of the changes in water temperature All fish to a large extent,limited the scope of activities.
Fish in different seasons have different activities that day in place of the activities it has also changed from time to time,there are food,water temperature changes brought about by the impact of human disturbance at the same time can not be ignored,because some people fishing in the waters And tourism are also more fish to survive in this environment,the ability to enhance anti-fishing.At the same time,has become unusually vigilant.
When feeding fish in the weather condition is relatively large,hot weather,low air pressure,the fish will be anorexia,the larger the fish will not eat hiding in the water fixed; On the other hand,the water temperature is too low,the fish-generation radio Functional down,it will be feeding when the water temperature suitable,adequate dissolved oxygen,especially after the rain in the summer,the fish will be abnormal activities,feeding pro-active,double the rate of increase the bite,when there is food in some places,fish Children will be adopted by way of information to each other,Quzhiruowu go in search of food,but once the reservoir water,the water level drop quickly,the fish will be panic about the performance,hiding in the deeper water to eat very few of these Fish is also a feature of the habit.
In short,life in the activities of the fish in the same period a sexual,orientation and mass migration habits of activity,we have called this migration.Is a phenomenon of migratory fish by virtue of such activities is to meet its needs in a life time of the external conditions for its population reproduction has been a reliable guarantee.The migratory fish are four:the reproductive migration,feeding migratory and migratory warming,the winter migration.We have often found fishing in the spring carp,crucian carp,catfish species,such as Sham Shui Po came from the shallow-water mating; summer rain in the reservoir to the upper reaches of the Su Liu Lei will be in the vicinity of food intake; Zhongqiu fish after another Sham came to the shallow water from the winter.These phenomena are the migratory habits of fish in the area.