What is black angelfish?
Black Angelfish, also known as Heiyan, Moyan. This is a variant of angelfish, and its genetic traits have been stabilized by artificial breeding. The body shape is similar to the angelfish, the fins and fins are wider and shorter, like a swallow-like butterfly, and the whole body is black. Some black angelfish have a vertical transparent square at the base of the caudal fin, which is very beautiful and unique. The black angelfish is gentle in temperament, graceful and elegant in swimming, and is deeply loved by people. However, it is more difficult to raise than angelfish, and has higher requirements on water temperature, erbium material and environment, so be careful in raising.
What does a black angelfish look like?
Appearance features: body length 10-15CM, disc-shaped laterally flattened. The whole body is as black as ink, and the body color is bright. Males are larger, with a round, thick and slightly convex head, while females have a straight head. This is a variant of angelfish, and its genetic traits have been stabilized by artificial breeding. The body shape is similar to the angelfish, the fins and fins are wider and shorter, like a swallow-like butterfly, and the whole body is black. Some black angelfish have a vertical transparent square at the base of the caudal fin, which is very beautiful and unique. The black angelfish is gentle in temperament, graceful and elegant in swimming, and is deeply loved by people. However, it is more difficult to raise than angelfish, and has higher requirements on water temperature, erbium material and environment, so be careful in raising. Habits: broodstock sexually mature 6-8 months.
black angelfish living habits
Native to the Amazon River in South America. The fish body is rhombus-shaped, extremely flattened on the side, the rear edge of the caudal fin is straight, the rays of the dorsal and anal fins are extended backwards, and the upper and lower sides are symmetrical, like an open sail. The pelvic fins are long and filamentous. From the side, it looks like a swallow flying in the air, so it is also called swallow fish. Angelfish has no bright colors. The base color of the original fish is silver-white, the back is golden yellow, and there are four black horizontal stripes on the side of the body. The first one passes through. Eye sockets, the second at the front edge of the base of the dorsal and anal fins, the third from the end of the dorsal fin to the end of the anal fin, and the fourth at the base of the caudal peduncle.
The dorsal and anal fins are light yellow, the caudal fin is transparent, covered with black longitudinal stripes, and the eye sockets are red. Body length up to 150 mm, body height up to 200 mm. Angelfish are gentle in temperament and elegant in manner. They love to swim in the middle of the water, often stop in the water, and have a quiet habit. It is best to keep them in a single tank. There are no strict requirements for water quality, and they like soft water with weak acidity. Angelfish can live in a water temperature of 20 °C, but the water temperature is low for a long time, and it is not good for growth and susceptible to disease. The most suitable temperature is around 26 °C.
black angelfish rearing
The water temperature is 22~26℃, and it likes slightly acidic soft water. The water should be clear and transparent, and the water surface should be spacious. The body is flat like a disc, the head is small and pointed, the pectoral and anal fins as long as fringed, and the dorsal fins as tall and straight as sails, giving people a kind and solemn feeling. Body color is rich and harmonious, some silvery white, some jet black, and some black and white. The iris is bright red. water quality
Turbidity can easily lead to fin rot and skin fungal infection. The water temperature in winter cannot be lower than 21 ℃, otherwise it is easy to suffer from diseases or endanger life due to the low water temperature. The age of sexual maturity of broodstock is 6 to 8 months. It is difficult to distinguish males and females in juveniles. Adult male fish have a higher degree of head bulge than female fish, and their body is generally larger than that of female fish; female fish has a bulged abdomen and thicker fallopian tubes. The broodstock have the habit of choosing their own mates, and it is difficult to breed successfully by artificially pairing them at will. For the selection of broodstock, 10 to 15 6-month-old angelfish should be stocked in an aquarium of 100 cm x 50 cm x 35 cm. At this time, the fish body is the size of a teacup mouth. Pay attention to observe if there is a pair of inseparable pairs. , occupy a corner of the tank and keep other fish away from them. This is likely to be a pair of congenial partners, and they are fished into the breeding tank for separate breeding and breeding. Choose an aquarium with a size of 50 cm × 50 cm × 35 cm, the breeding water temperature is 27~30 ° C, and the water quality is weakly acidic or neutral soft water. It likes to lay eggs on the smooth green leaves of aquatic plants.
Larger broadleaf aquatic plants can be planted in the aquarium, or light green tiles or green plastic boards can be placed in place of aquatic plants. The spawning time of female fish is mostly concentrated around dawn, the parents lick the nest with their mouths, and the fallopian tubes and vas deferens at the anus of the male and female parent fish sag, which is a sign of pre-breeding. When spawning, the female fish ovulates in the front, and the male fish ovulates closely behind. The female fish ovulates very evenly, and the egg distribution is very regular, just like a finely carved artwork. After spawning, both parents take care of them together, and keep swiping their pectoral fins near the eggs to make the water flow slightly to prevent garbage from sticking to the eggs. Fertilized eggs hatched larvae after 50 hours.
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