? The main attention should be paid to keeping warm in northern courtyards. Because of the low temperature in winter in the north, the water surface will even freeze, if we do not pay attention to controlling the temperature, the fish will freeze to death. In addition, as the water temperature drops, the vitality of the fish will also decline, so do not feed it frequently, so as to avoid a large number of residual bait falling into the pond, polluting the water quality after decomposition, and causing adverse effects on the health of the fish.
should we pay attention to when raising fish in winter? 1. Prevent low temperature: First of all, we should prevent low temperature when raising fish in winter. Low water temperature has a greater impact on the health of fish, and even leads to their death. If it is tropical fish, the general water temperature should be kept above 20 degrees Celsius, outdoor fish ponds are generally unable to raise, can only be raised in fish tanks. Eurythermic fish, such as goldfish and koi, can live as long as the water temperature is 5 C, but it is better to have a higher water temperature.
2, prevent anoxia: Winter is generally not anoxic, because if the temperature is low, the dissolved oxygen will be relatively high, but if too much food is fed, it will also consume oxygen in the water, and anoxia in winter is very dangerous, so it is necessary to use an oxygen pump to oxygenate, while controlling the amount of feeding.
3. Prevent shallow water: The water for fish farming in winter must not be too little. If the water is too little, the temperature is not easy to maintain, and it will increase the possibility of freezing, which is also not conducive to the survival of fish.
