草鱼在水温低于5℃或高于35℃时，会完全停止食欲。它们的生存范围从0到38摄氏度不等，最适宜的温度区间在27至32摄氏度之间。在这个温度范围内，它们能够积极寻找和消费食物。但当水温降低到5℃以下或者升高至35℃以上时，草鱼就会失去对食物的兴趣。如果水温达到了0℃以下或者超过了38℃，这些美味的淡水鱼就不会再有生命迹象了。
草鱼是中国四大家鱼之一，其别名包括油鲩、草鲩和白鲩等。它们属于动物界、脊索动物门、辐鳍鱼纲、鲤形目、鲤科和草鱼属。这群广泛分布于全国各地池塘、溪流、江河湖库以及沼泽中的淡水生物，以植物为主食。
grass fish, the only species in its genus, are found throughout China. They thrive in various aquatic environments such as ponds, streams, rivers and lakes. Their preferred habitats include the lower layers of water bodies or nearshore areas with abundant vegetation.
The dietary preferences of grass fish change as they grow. During their larval stage, they primarily consume floating organisms like branchiopods and rotifers. As young fish, they feed on a variety of food sources including planktonic animals, aquatic insects and algae. Once matured into adult fish, their diet consists mainly of higher plants that thrive in water such as those belonging to the grass family.
In summary, while grass fish can tolerate a wide range of temperatures for survival (from 0-38°C), their appetite is most active within a narrower temperature range (27-32°C). This makes them more likely to eat when conditions are suitable for optimal growth and reproduction.
