Tiger skinfishPuntiustetrazona is also known as Sijian fish, Sijian crucian carp. Origin: Malaysia, Indonesia Sumatra, Kalimantan and other inland waters. Appearance: The tiger skin fish is tall, prism-shaped, flat on the side, 5-6 cm long. The body color is light yellow, with red markings and dots, and there are 4 vertical black stripes from head to tail, and the spots resemble tiger skin. The dorsal fin is high, located in the upper middle of the back, the caudal peduncle is short, and the caudal fin is deeply forked. Habits: The optimum growth water temperature is 24-26℃, and it requires old water with high oxygen content. Omnivorous, but likes to eat live food such as fish, worms, water earthworms, etc., and also eats dry food, and loves to eat gluttony. Tiger skin fish is good group, swims agile, lively, adult fish will attack it, especially likes to bite filiform fin rays, it is not suitable to mix with fish with filiform fin rays (such as angelfish). It is advisable to breed in the same species. Variants of tiger skin fish include green tiger skin fish and golden tiger skin fish. The body shape and fin shape of the green tiger fish have not changed, but the body color has changed into irregular large green patches and stripes, which are very beautiful: the green tiger fish requires high dissolved oxygen water. Golden tiger skin fish has a golden red body and red eyes. breeding characteristics: choose 4 cm or more as broodstock. Males wear bright marriage colors, and the red pigments on the pelvic, dorsal, and anal fins are redder; females are plump and have enlarged abdomens. It requires soft water with a hydrogen ion concentration of 100-251.2 nmol/L (pH 6.6-7), a hardness of 4 degrees, and a water temperature of 27-29 °C. Tiger skin fish are gluttonous and eat after spawning, and fish out the broodstock after spawning. The fertilized eggs hatched larvae after 24 hours, and after 2 to 3 days, the larvae could swim horizontally. The tiger skin fish is brightly colored and has distinct lines. The oval-shaped laterally flat fish is light yellow, the back is golden yellow, the abdomen is white, and the dorsal and pelvic fins, as well as the forked caudal fin and mouth are bright red. There are four horizontal dark green and black wide stripes on both sides of the fish through the eyes, the front of the pelvic fin, the front of the dorsal fin and the front of the front of the caudal fin, like tiger skin, hence the name, also known as the four fish. There are also some variant species of the same kind: golden tiger skin fish, green tiger skin fish, red tiger skin fish, glass tiger skin fish and other species. Tiger skin fish is accustomed to swimming in the middle waters of the water. It is a very lively carp fish. They like to swim in groups. Therefore, it is best to raise more when raising them. They often fight with each other. The situation of chasing and biting, but it seems to be playing without causing great damage. Another bad habit of tiger fish is that it likes to attack other fish that are slow swimming and slender fins, especially angelfish, Often their beautiful fins will be bitten and damaged by tiger fish, so it is best not to mix slow-moving fish such as angelfish with tiger fish, most other small and fast-moving fish All are suitable for tiger fish to live and coexist together. Tiger skin fish likes clear and old water quality, and is very sensitive to changes in water temperature. Too drastic changes in water temperature environment can easily make them sick. As long as you pay attention to this point, tiger skin fish are still very easy to raise. Tiger skin fish do not choose food, prefer animal bait. The tiger skin fish can enter the mature breeding period after about 6 months. The identification of male and female is: the edge of the dorsal fin of the mature male fish is dark red; the color of the female fish is lighter, the abdomen is plump, and the body size is slightly larger than that of the male fish.     Tigerfish are oviparous fish and are relatively easy to reproduce. In a small breeding tank with a suitable water temperature of about 25°C, water hardness of 5-7, and pH of about 7.0, first lay a layer of Fontinalis Antipyretica or brown silk that has been sterilized with hot water as the attachment for fish eggs. and protection. Then, select female fish and healthy male fish with characteristics to be produced, and put them into the breeding tank according to the ratio of 1:1 or 1:2 between males and females. In a quiet environment, the male and female fish will soon enter a rut state, showing a particularly bright marriage color. The male fish will vigorously chase the female fish until the female fish and the male fish follow each other and chase after each other. Eggs are laid in aquatic grasses, and males fertilize them at the same time. The eggs are white, transparent and sticky, and will stick to the aquatic plants, and the number is between 200-500. When the spawning is over, fish out the fish to prevent them from swallowing the eggs. The fertilized eggs start to hatch after about 36 hours, and the larvae do not swim very well within 36 hours after hatching, and are adsorbed on the tank wall and aquatic plants with their heads up. Small plankton can be fed with paramecium at this time, or can be fed with a little egg yolk after adjusting the water, but it must be noted that not too much at one time, the egg yolk can easily pollute the water quality and lead to water corruption. In this way, after another 7-10 days, the larvae can directly feed the small fish and insects.