1. Prepare a fish tank, the size depends on the number of red-flag fish, and try to make the fish have more room for activities. When raising red flag fish, it is best to control the water temperature at about 25 -28 degrees.
2. Swordfish will concentrate on activities near the water surface when they are short of oxygen. At this time, you can turn on the oxygen generator to supply oxygen. If there is no oxygen machine, change some water for the fish, find a straw to suck out the dirty things at the bottom of the tank, and change it to 1 or half of the water. If the change is too great, the fish will not adapt. Clear water does not mean that there is oxygen in the water. Try not to touch the fish when absorbing or adding water. 、
3. Divide the male and female swordfish, and the red swordfish distinguishes the male and female by looking at the tail: the sword tail is male and the round tail is female. The tail of a small fish is round, and when he grows up, the male fish will grow a sword.
Red sword has a beautiful tail, but it also likes to chase and bite its tail, so it is best not to raise other aggressive fish, such as tiger skin.
Red flag fish can be fed with professional fish food, and so can bread crumbs. Red flag fish is not very selective.
6. Female swordfish is born every 4-6 weeks, which is influenced by the age of female fish and the proportion of male fish. Can produce 30-300 larvae at a time. When breeding, we should pay attention to the fact that the number of fish in the same nest should not exceed that of the second generation, so as to avoid the species degradation caused by continuous inbreeding, and make the fish body of the offspring smaller and smaller, and the dorsal fin shorter and narrower.
Feeding of anchovies:
1. water temperature: generally, the water temperature should be controlled between 18℃ and 34℃. If the temperature is lower than 18℃, anchovies will suffer from loss of appetite and listlessness. But also easily infected with diseases such as water mold. As a feng shui fish, it's generally ok. But as an edible fish, it needs to be cultured according to the situation.
2.PH value: The most suitable PH value for anchovies is generally between pH 6.5 and pH 7.5, which has a great influence on anchovies. There are also many PH values that will kill anchovies.
3. Hardness: For the hardness, the requirements of anchovies are generally around 10- 15 degrees. Although experts say so, the examples in real life are quite different. Just like Germany and Japan, the water quality in both places is hard water and soft water. Anchovies can live in two places.
4. Nitrite concentration: Nitrite concentration also affects anchovies. If its concentration is too high, it is still harmful to anchovies.
5. Feed: There are three kinds of feed for anchovies. Of course, there are also feeds specially developed for them, such as flake feed, pellet feed and frozen feed.