The shape of dorsal fin also reminds people of marine fish, but it is not a member of shark family and genus; Have the habit of competing with the same kind. Length: 1.20 mm Difference between male and female: extremely difficult to raise: easy; Sometimes aggressive eating habits: cross breeding methods: scattered egg reproduction ability: difficulties
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Water quality: soft; Medium-hard water temperature: 24℃ Stocking form: polyculture activity area: special needs of middle and lower waters: aquatic plants.
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The optimum growth water temperature is 24~26℃, which requires old water with high oxygen content. Omnivorous, but like to eat live bait such as fish, worms and water worms. Swimming is agile and lively, and adult fish will attack other fish, especially biting filamentous fins. Not suitable for mixed culture with fishes with filiform fins (such as angelfish). It is advisable to feed in the same group. The variation species are green tiger skin fish and golden tiger skin fish. Red-tailed black shark is also a good species, which does not require high water quality. It likes old water and should not be replaced with new water. The suitable water temperature is 22 ~ 26℃. Because it belongs to the bottom fish, the aquarium should be slightly wider and higher, and broad-leaved aquatic plants should be planted. The red-tailed black shark prefers a semi-bright and semi-dark living environment, is less courageous and likes to hide in the grass. This kind of fish is a famous omnivorous "scavenger". Moss, residual bait and algae in the fish tank can be eaten, but it still likes to eat live, so it can be fed more red nematodes and the like. When raising red-tailed black sharks, young fish can be put in the same fish tank, but when they grow up, it is best to put only one fish in the fish tank, because red-tailed black sharks.
These territorial concepts are unique. If there are two red-tailed black sharks in a small fish tank, they will often fight to the death for territory. In addition, they also have the habit of chasing other fish species, but generally they don't hurt their friends. Red-tailed black shark is a kind of flowerpot spawning fish, which distinguishes sex by size and color. The male fish is thin, with a golden red tail, and the female fish is slightly bigger, with an orange red tail. It is best to raise female and male parent fish separately half a month before breeding, feed more fresh fish food, spread black and white pebbles on the bottom of the breeding box, plant broadleaf aquatic plants and set up an inverted flowerpot. The aquaculture water is weakly acidic, and the water temperature is 25 ~ 26℃. The ratio of male to female is 1: 1. Sexual consummation after half a month, usually spawning in the early morning. Fish marriage strictly abides by the "monogamy" system, and the third male fish is not allowed to intervene, otherwise the two males will be injured when fighting, so be careful when pairing. This kind of fish has the habit of protecting eggs and generally does not eat their own eggs. The fertilized eggs hatch and surface within 2 days, then swim in two scales for food and feed the backwater. It is worth noting that the mortality rate of young fish at 2 weeks is high, so nutrition must be strengthened. This small fish is very dark in color. After 8 weeks, the caudal fin turned red, and each fin was inlaid with white edges. When I grow up, it becomes a black and red tail.
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Red-tailed black shark is also known as black herring, red-tailed fish and fire-tailed fish. The red-tailed black claw from Thailand is a medium-sized species of tropical fish. Its body length can reach 14 cm, its body is spindle-shaped, its caudal fin is bifurcated, its whole body is black, and its caudal fin is golden red. Red and black are one, with bright colors and unique style. Another sign of the red-tailed black shark is that its dorsal fin is particularly wide and it has two beards on its mouth. Black shark with red tail
The body is slender and the side is flat. Abdominal contour is relatively flat. In front of the mouth, the snout has short whiskers. The dorsal fin is high and triangular, located in the middle and back of the fish, and looks like a shark as a whole. The body color is black, and the male fish is darker. All the fins are dark black, but the caudal fin is bright orange and the pectoral fin is light or slightly orange. The maximum hair length can reach 12 cm. Spindle-shaped in height and 5~6 cm long.
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Choose parent fish above 4 cm. The male fish is dressed in bright wedding colors, and the red pigment on the ventral fin, dorsal fin and gluteal fin is redder; The female fish is fuller and her abdomen is more enlarged. Soft water with pH 6.6 ~ 7, hardness of 4 degrees and water temperature of 27~29 degrees is needed. Tiger fish are gluttonous, they should eat after spawning, and then take out their parent fish after spawning. After the fertilized eggs hatch for 24 hours, the larvae can swim horizontally after 2~3 days. At this time, micro backwater and rotifer can be cast. It is difficult to breed red-tailed black sharks artificially. The female fish is smaller than the male fish and has a bigger abdomen. According to the relevant data, the requirements for aquaculture are: water temperature 26 degrees, pH 6, hardness about 2 degrees, large aquarium more than 60 centimeters long, dark sand on the bottom, and eggs attached to crown grass pots or earthen pots. Strictly monogamy. The incubation period of fertilized eggs is 2 days and nights. The fish is 8~ 10 cm long. The tail fin of young fish will also turn black, turn golden with growth, and turn fiery red when approaching adult fish. The suitable water temperature for the red-tailed black shark is above 22 degrees. The requirements for water quality are not strict, but there should be aquatic plants, sand and gravel, less light and a wide water body. He eats omnivorous and tasteless creatures, mosses, algae, chopped and scalded spinach leaves, artificial ingredients and feed. There is a concept of territory, for example, many tails are kept in the same box. After the strong occupy the favorable site for foraging and habitat, the weak can't get in. Therefore, it is not suitable to be raised in the same population; Don't mix with small fish, you can mix with other fish of the same size. If the water environment is unfavorable and malnutrition occurs, the color of the caudal fin will become lighter or yellow. Germans call the red-tailed black shark "fire-tailed fish", because the whole body of the red-tailed black shark is dark, only about the tail fin.
Like a burning flame. When a shark is young, its fins are black, about 8 cm long, and its tail fins turn golden yellow. When it grows to 10 cm, the caudal fin turns bright red when it reaches sexual maturity. When the water temperature is too low, the color of the caudal fin will turn orange or even pure black. The feeding trough can be covered with dark gravel, so that the tail fin of the red-tailed black shark will become redder. There should be many kinds of aquatic plants in the tank. This kind of fish is timid, so put two flower pots on both sides of the tank to hide them, and don't put them in places with too strong light. Red-tailed black sharks love to swim in lower waters, but they can often be seen swimming up and down, chasing and playing. Does not require high water quality, grows well at 22-30 degrees, and can be mixed with large tropical fish. Red-tailed black sharks like to eat animal food. But often sucking the moss on the fish tank and feeding some chopped spinach will make it more colorful. Omnivorous, spawning, aquarium is suitable for aquatic plants and submerged trees, and can be mixed with medium and mixed culture.
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Tropical fish known as sharks are as follows: ① Silver basin fish: 36 cm long, silvery white, with forked tail, strong and tame, and can be raised at water temperature above 65438 08℃. ② Trionyx sinensis swordfish: 30cm long, silvery gray, forked tail, 8 longitudinal stripes on the side, and the dorsal fin as wide as a sail. Black shark with red tail
③ Rainbow fish: 12 cm long, taupe, forked tail and orange fins.
Edit this paragraph summary.
Latin scientific name of red-tailed black shark: epalzeorhynchus bicolor (Cyprinidae), a species of Rabe. Body shape and habits are spindle-shaped in height and 5~6 cm in length. The optimum growth water temperature is 24~26℃, which requires old water with high oxygen content. Omnivorous, but like to eat live bait such as fish, worms and water worms. This kind of fish swims in groups and is agile and lively. Adult fish will attack other fish, especially like to bite filamentous fins. Not suitable for mixed culture with fish with filamentous fins (such as angelfish). Thailand of origin. Germans call the red-tailed black shark "fire-tailed fish" because the red-tailed black shark is black all over, and only the tail fin is like a burning fire. When the red-tailed black shark was young, its body fins were black and grew to about 8 cm, and its tail fins turned golden yellow. When it grows to 10cm, the caudal fin will turn bright red. When the water temperature is too low, the color of the caudal fin will turn orange or even pure black. The feeding trough can be covered with dark gravel, so that the tail fin of the red-tailed black shark will become redder. There should be many kinds of aquatic plants in the tank. This kind of fish is timid, so put two flower pots on both sides of the tank to hide them, and don't put them in places with too strong light. Red-tailed black shark fish like to swim in lower waters. Red-tailed black shark
But you can often see them swimming around, chasing and playing. Does not require high water quality, grows well at 22-30 degrees, and can be mixed with large tropical fish. Red-tailed black sharks like to eat animal food. But often sucking the moss on the fish tank and feeding some chopped spinach will make it more colorful. Ph: 7.5h:10t: 26cl:12cmv: 200l omnivorous, spawning type, suitable for aquatic plants and submerged trees, and can be mixed with culture medium and mixed culture (only one is recommended). Red-tailed black sharks have a bad temper, so it is not appropriate to keep a few together. If you need to raise * * *, you must have more than six to disperse its attack power. It can be safely mixed with other fish of the same size because the red-tailed black shark is very friendly to other fish. The unique posture of red-tailed black shark makes it the favorite of breeders, and its albino species (commonly known as pink shark) is also favored by breeders because of its rare orange-red body color. Because the red-tailed black shark likes to devour algae on the tank wall, it can be raised as an algae scavenger. However, its snout is susceptible to infection, so more attention should be paid. The red-tailed black shark is lively and needs to be covered on the fish tank to prevent it from jumping out of the fish tank.