Ichthyologists tell us that this strange shape of flounder is not innate. The newly hatched flounder also has eyes on both sides. When it grows to about 3 cm, its eyes begin to "move", one eye moves above the head, and gradually the upper edge of the head moves to the other side until it is close to the other eye. The life habits of flounder are very interesting. When swimming in the water, it doesn't have its back up like other fish, but its side with eyes is up and it swims sideways. It often lies flat on the bottom of the sea, covered with a layer of sand, and only two eyes are exposed to wait for prey and avoid predation. In this way, the advantages of two eyes on one side are displayed, which is of course the result of animal evolution and natural selection.
In ancient China, flounder was a strange fish symbolizing faithful love. The ancients left many beautiful sentences praising flounder, such as "Phoenix is an amphibious fish" and "Why didn't you quit your job when you had a better job? I would rather be a mandarin duck than a fairy. Li Yu, a famous dramatist in the Qing Dynasty, once wrote a play about the love story of a talented person and a beautiful woman. The play was called Flounder.
In fact, the ancients' understanding of flounder was wrong. "Erya Dish" said: "The eye of the East has contrast, but it is not better than it, hence the name sole." "Wu Du Fu" also said: "Double eyes, film than Wang Yu." (Note: "The flounder comes from the East China Sea. Wang Yuyu, his body is half. As the saying goes, the silver carp of the King of Yue is inexhaustible, so it is half abandoned in water for fish, so there is no one, so it is called king. " The ancients called it "flounder" because it "looks like a cow's spleen, with thin scales and purple-black. The two pieces can be combined at a glance, so they are called flounder. " As I said before, flounder is really a strange fish with eyes on one side and no eyes on the other, but it doesn't have only one eye, but its eyes are close to one side. It is a big mistake to say that it is "two pieces in one". How can two fish be kept together? Different kinds of flounder have different eye positions. The eyes of the halibut family are on the left, while those of the sole family and sole family are on the right.
Helostoma temmincki is famous for loving to "kiss" each other. In fact, not only heterosexual fish, but also homosexual fish have the action of "kissing", so it is generally believed that the "kissing" of kissing fish is not a manifestation of friendship, but perhaps a struggle. The body color is light red.
Origin: Thailand, Indonesia, Sumatra.
Habit: gentle, non-aggressive, and can be mixed.
Water quality: PH7.0-7.5 is the best for water that is not demanding but slightly hard.
Body length: up to 30cm.
Feed: gluttony, the main food is frozen Artemia, and earthworms also like to eat it. Especially interested in salmon and trout eggs.
Breeding: Different from fighting fish. It does not spit or nest, but directly lays floating eggs and floats on the water. The egg is amber. If it is white, it means that the egg is not fertilized. The number of eggs laid is large, 4000- 10000 each time.
The body length of kissing fish is generally 20 ~ 30 cm, and the thick "sexy" lips are the most remarkable feature. When two fish meet, like two suckers, they can kiss all afternoon. Don't think this is the affection between their lovers. In fact, this is a fighting phenomenon, fighting to defend your own space field! However, this kind of struggle is not fierce. As long as one side gives in, the winner will not continue to pursue it, but will continue to bury himself in its cleaning work as if nothing had happened. Therefore, their habits are mild and will not pose a threat to any other fish, so they are suitable for polyculture.
Although zoologists have confirmed that the kissing action of kissing fish may be a nature of fighting for territory, it is really interesting to watch the fish kissing affectionately, so many young people are scrambling to raise kissing fish now, which means their love can be sweet.
If you don't choose and feed the kissing fish well, it swims slowly, looks like a tropical fish and has a lot of manners. Because this kind of fish is red and white, like peach blossom, many experts call it peach blossom fish. Parent fish are easy to raise. There is no special requirement for water quality, and the water temperature is between 22 and 26 degrees Celsius. Many students still feed their relatives fish with small cups and bottles in the dormitory. However, because the parent fish is relatively large, it is recommended to choose a larger feeding tank. Kissing fish has a gentle temperament, moves in groups in various water layers and can live with other fish. And its diet is very miscellaneous, and it is not picky about food at all. It eats bread worms, broken earthworms and artificial feed, and it eats whatever its owner feeds it. He not only grows fast, but also has good resistance and seldom gets sick.
Natural fish tank "scavenger"
The kissing habit of parent fish is very beneficial to the ecology of fish tank. Parent fish often eat algae and moss on the walls of aquatic plants and aquariums with their mouths, which can make aquatic plants bright green and keep the tank walls clean, which is of great significance for cleaning aquariums. Parent fish often stand upside down when eating algae and moss at the bottom of the box, which is very interesting. Although the parent fish is a large fish species, it is not interested in the general large water fleas, and often opens its mouth to "drink" some small water fleas to satisfy its stomach, which is also a special feeding method for tropical fish. Because raising parent fish kills two birds with one stone, many people will put several parent fish in the tropical fish box as "scavengers".
Children and grandchildren with scattered branches have no fixed breeding season, so breeding is simple. Parent fish enter sexual maturity at the age of 15 months, and can reproduce many times a year. When you plan to breed small fish, you can put the parent fish into the breeding pond according to the ratio of male and female 1: 1, and add some distilled water to stimulate the parent fish to estrus. The spawning process of each female fish lasts for several hours, and can lay more than 1000 eggs, and some can reach 2000-3000 eggs. Because the parent fish has the habit of swallowing fish eggs, it is necessary to have a variety of floating aquatic plants in the culture pond to facilitate the attachment of eggs, or fish out the parent fish in time after spawning to prevent the parent fish from swallowing their eggs.