Red swordfish is also called "swordtail fish". The feeding method is as follows:

1. The feed used for feeding broodstock includes active feed and compound feed. The compound feed is fed Protein should be greater than 40, crude fat greater than 3.5, moisture less than 4, calcium 0.9~1.6, phosphorus 0.8~1.4.

2. Feed 1 to 2 times a day. During the breeding season, feed cladocerans, copepods, artemia or fresh feed such as small fish and shrimp blanched and ground in boiling water 2 to 3 times a week.

3. When feeding, you should pay attention to storing tap water for 2 to 3 days in advance, adjusting the pH of the water to 6.5 to 7.5, and the pH of the water to 7 to 8.

4. Pay attention to maintaining the water quality with nitrite concentration and providing nutritious bait. Of course, other water quality and water temperature requirements cannot be ignored. There are the following water qualities:

(1) Activated carbon filtered water: Put activated carbon into a plastic or enamel drum, let tap water flow in from the water inlet at the bottom and flow out from the water outlet at the top. The water after filtering the swordtail fish is stored in an aquarium or other container. It can be used as both daily feeding water and breeding water for ordinary tropical fish.

(2) Ion exchange resin filtered water: Ion exchange resin is used as filter material. With the help of the adsorption capacity of anion and cation exchange resin, calcium ions, magnesium ions and nitrite in the water can be adsorbed.

(3) Deionized water: also known as distilled water. It is generally obtained by electrodialysis and electrolysis, and the water quality is very pure. Deionized water is extremely soft and has extremely low oxygen content, making it unsuitable for feeding water. When used, it is often mixed with clean water to obtain water quality of different hardness and pH to meet the water needs of different species for breeding.

(4) Rainwater: The water is soft and contains very little metal ions. Generally, it can be found in a place with fresh air in suburban areas. Use a container to hold the rainwater, and then filter it before use.

Extended information:

1. The methods to buy swordtail fish are to look, smell, ask and cut. Because the fish in the fish store are "hundreds of fish", that is, different fish and different water quality in each breeding tank have entered the tank of the retail store in a short period of time. These fish themselves contain certain parasites and bacteria. If you enter the tank without good water, as most people selling swordtails in fish shops can only soak in the tank but don't get enough water, then different water quality will excite these parasites and bacteria from the fish's body.

2. There is also the sudden change in different water quality that makes fish unable to adapt. The most obvious manifestation is that there are no too many symptoms but the fish always die for no reason. The people in the fish shop are like fish that die as they wish. Fishing is difficult to see if you don't look carefully. This is one of the reasons why the fish in the hands of a farmer are not valuable at all, but the price in the retail store is 7-8 times higher.

3. The most important factors affecting the healthy growth of fish are water and filtration system. If you only look at the fish, you won’t be able to tell anything in a short time unless you don’t walk, eat or drink. Three days. So don’t just look at the fish you like and buy it immediately (unless it is extremely rare). Generally, it takes two to three weeks to look at a fish in a store, and some may take a month. Although this is very tiring and troublesome. , but the health rate of the fish bought in this way is above 90. It takes a long time, but it can save a lot of trouble.

3. Fish hide in some corners. This is because fish have a very strong sense of urgency, which is mainly caused by discomfort with water quality and environment. The water is not very clear, but fish are very lively and asking for food. A strong desire means that the fish has completely adapted to the water quality and environment in the tank. It is also critical to see whether there is a large amount of fish feces and remaining bait in the tank and on the filter cotton. More feces is a good thing, which proves that the fish has a good metabolism. It is recommended not to buy fish in an overly clean tank if there is leftover bait in the tank. It proves that the fish's desire for food is not very strong (people in the fish store will not increase the amount of food they feed the fish).

Reference: Baidu Encyclopedia-Red Swordfish