Swordtail Fish
The original species of swordtail fish in nature has a light blue-green body color. The male fish has a needle-like fin extending from the lower edge of the tail fin, commonly known as the sword tail. The female fish has no sword tail. After artificial breeding, its body color has become richer, including red, white, blue, etc. Its representative fish include red sword, green sword, white sword, black-fin red sword, black-fin white sword, mandarin duck sword, etc.
The body length of swordfish can reach 10 cm. It has been miniaturized after being raised artificially, only 7 to 8 centimeters long. The body is olive or red, with a dark red stripe in the middle of both sides, starting from the back of the gill cover to the tail, with light blue borders on the left and right sides of the stripe. The tail of the sword is green or orange, with a black edge.
1. Swordtail fish Feeding request
Swordtail fish is highly adaptable, easy to raise, and can tolerate low temperatures of 5 degrees Celsius in a short period of time. Swordtail fish have strict water quality requirements and can survive and grow normally in weakly acidic, neutral or weakly alkaline water. The suitable water temperature is 20-25 degrees Celsius. The water in which swordtails are raised must have sufficient dissolved oxygen to enable them to move in the middle and lower waters. If there is little dissolved oxygen in the water, they will float and swim on the surface. When there is severe lack of oxygen, some male fish will jump out of the water.
Swordtail fish has a variety of food habits and a large food intake. It does not harm other fish and can be kept in mixed culture. The water temperature for raising swordtail fish should not be too high, as long-term high temperatures can shorten its lifespan. Swordtail fish are very popular among people because of the unique shape of the male fish. They are an indispensable hot fish species in the aquarium. The life span of swordtail fish is about 3-5 years. When the dorsal fin of the fish is found to be slightly raised, it means that the fish body has entered the frail stage.
2. Broodstock cultivation
Feeding swordtails The purpose of raising broodstock is to obtain high-quality fertilized eggs. There are two types of feeds for feeding broodstock: active feed and synergistic feed. The synergistic feed should contain more than 40% protein, more than 3.5% crude fat, and low moisture. At 4%, calcium 0.9% ~ 1.6%, phosphorus 0.8% ~ 1.4%, and add an appropriate amount of substances effective for gonad development, such as vitamin E, vitamin A, vitamin D, trace element zinc, etc., feed 1 to 2 times a day During the Everlasting Festival, feed cladocerans, copepods, annual insects or small fish, shrimps and other fresh feeds that have been blanched and ground in water 2 to 3 times a week. Please note: ① Store the tap water for 2 to 3 days in advance. ② Adjust the water pH to 6.5 to 7.5.
3. Gender determination of swordtail fish
First of all, look at the skin. The one with a silvery gray color is female, and the one with a lemon color is male. Secondly, the sexually mature female fish has a plump body, a swollen and soft abdomen, and an obvious ovary surface when looking upward, which is rich to the touch. Flexible. Male zebrafish (definitely introduced) have a flat abdomen and a long body.
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