See the tropical fish of the aquatic key essence
There are about hundreds of species of freshwater tropical ornamental fish that can be raised in aquariums, mainly belonging to 7 families, namely medaka, cyprinid, lipocarpaceae (Lagacinaceae), cichlid family, climbing perch, catfish family and ancient fish family.
Freshwater ornamental fish refers to fish with ornamental value and culture value that live in tropical or subtropical freshwater. This kind of ornamental fish is generally very colorful, strange in size and breeding methods, which is very popular with people.
Medaka family : Peacock fish, swordtail, moonfish, American sailfish (oviparous)
Cyprinids White cloud mountain fish, four-room crucian carp, T-shaped crucian carp, half-carp, triangle fish, zebrafish Broodstock have no egg protection habit after spawning.
Each species of the LipidIdae (Lagacinaceae) has more than 2 colors with high contrast, and "glowing" red lotus lamp/traffic light fish Pauline lamp fish Black lotus lamp lantern fish black peony . The new red lotus lamp differs from the red lotus lamp in that the abdomen of the new red lotus lamp is bright red from the lower half of the gill cover to the tail stalk, while the abdomen of the red lotus lamp fish is only half (from the ventral fin to the tail stalk) is bright red.
Cichlids have 1 nostril on each side of the head. The side line is divided into 2 strips. Oral incubation. Take turns to protect eggs Angelfish, colorful angelfish, piglet fish, African phoenix fish, colorful phoenix fish, etc
Perciformes Thai Fighting Fish Chinese Fighting Fish Lili Fish Silver ManDrow kissing fish
Catfish Family Gopher fish Leopard-patterned ratfish Red-tailed cat Three-room ratfish
The general method of identification of the male and female appearance of angelfish can be used for reference:
The first black stripe of the male is placed before the dorsal fin spines, while the females are placed after the dorsal fin spines.
The male has a second black stripe toward the head, while the female tends to the tail.
Males have some branched wings on the lower fin, while females have neatly cladten wings under the fins.
The lower wings of the fin of males are obliquely straight and narrow, while the lower wings of females are broader.
The ventral chakra between the lower anus and fin of the male is flat and broad, while the female is obliquely straight.
At sexual maturity, the vas deferens of males protrude and droop backwards, while the spawning tubes of females protrude and droop forward.
Colorful angelfish have a lot in common with the general cichlid fish: acidic soft water, male and female pairing, need to lay ovipocles or spawn tubes, broodstock have egg protection habits, etc.
Differences: Colorful angelfish hatch for a period of time after the brooding need to attach to the broodstock to absorb nutrients, commonly known as "feeding", this process takes about 5 to 7 days, when the juvenile fish's vision develops to a certain extent, you can eat the smallest bait organisms such as: rotifers, harvest insect larvae, small branches and horns, etc
Artificial reproduction of colorful angelfish:
Sexually mature broodstock, after finding a "compatible" partner on their own, should be isolated and kept alone.
Adjust the water quality of the breeding box to the appropriate range: pH 4.5 ~ 6.8, hardness 5 ~ 6DH, nitrite is best close to "zero". The light should not be too strong, the temperature is 28 ~ 29 ° C, and the egg-laying device is placed.
After the broodstock are paired, keep the surrounding environment of the breeding box absolutely quiet and should not have any interference. Water quality, water temperature, light, etc., should also be kept as stable as possible, and the smaller the change, the better.
When all conditions are ripe, the female will spawn at the chosen spawning site and the male will be instilled.
The newly hatched fry is attached to the spawning tube, the broodstock are protected at all times, and in case of interference, it is very likely that the juvenile fish will be eaten, and the yolk sac will gradually disappear and begin to attach to the side of the broodstock to "suckle".
During the "feeding" period, the body surface of broodstock will darken, which is a normal phenomenon.
If the "milk" is not secreted enough, the pH can be lowered by 0.2 to 0.5 units. At the same time, strengthen the nutrition of broodstock. "Feeding" is taken over by male and female fish.
After 3 to 4 days of feeding, the juvenile fish body shape gradually becomes disc-shaped, can feed on the harvest insects or small twigs, at this time can stop inflating and close the filter device, so that the harvest insects or branches can float around the juvenile fish for a long time, in order to feed.
Feeding work should be carried out 4 to 5 times a day, and the amount should not be too much each time, because the juvenile fish at this time can not be separated from the broodstock, the feeding range is small, and the ability to catch live bait is poor.
In principle, the "feeding" attachment time of juvenile fish should be extended as much as possible, which is conducive to improving the survival rate. However, considering the reproduction of broodstock, it is necessary to separate juvenile fish from broodstock at appropriate times. When juvenile fish can actively swim away from the broodstock for active feeding, they can be fed individually.