What are the main varieties of arowana?
Arowana is a kind of large freshwater fish, belonging to the family Ostracodontidae. As early as the paleocarboniferous. The discovery of this fish began at 1829, in the Amazon basin of South America, and was named by American ichthyologist Dr. Vandell. 1933, a French ichthyologist, Dr. Belugalan, discovered red arowana in Saigon, Vietnam. 1966, French ichthyologists Bran and Doberton discovered another kind of arowana in Phnom Penh. Later, experts and scholars from some countries discovered other arowana species in Vietnam, Malaysia Peninsula, Sumatra, Bangka Island, Biboro and Thailand, so they divided arowana into arowana, orange arowana, arowana, white arowana, arowana and arowana. The real introduction of aquarium as ornamental fish began in the United States in the late 1950s, and it was not until the 1980s that it gradually became popular all over the world.
Arowana's whole body glows with blue light, and the round scales glow pink after being irradiated by light, and each fin also presents various colors. Different arowana have different colors. For example, the young red dragon fish in Southeast Asia has small red scales and white in the red. In adulthood, the edge of gill cover and gill tongue are crimson, and the scales are shining. The scales of Huang Jinlong, Bai Jinlong and Qinglong are golden yellow, white gold and cyan respectively, and the ones with purple spots are the most precious. The main feature of this family arowana is that its swim bladder is reticulate and there are often organs on its gills.
Arowana is a carnivorous fish. From young fish to adult fish, it is necessary to feed them with animal bait, especially small fish that are active. Animal internal organs, easily interfere with the digestive system, can not be fed. The artificial compound feed is mostly prawn feed (floating). Let me remind you that fish need all kinds of nutrients just like people. You can't feed bait. You should make a nutrition menu to ensure its balanced nutrition.
Arowana can adapt to the water temperature of 24 ~ 29℃. If fish adapt well, they can even adapt to the temperature of 22 ~ 3 1℃. However, arowana, like other ornamental fish, should avoid drastic changes in water temperature.
Asian bony fish include: Red Dragon, Golden Dragon, Orange Red Dragon, Bai Jinlong, Qinglong and Golden Dragon;
Red Dragon: Scientific name: Scleropagesformosus English name: RedArowana, also known as Red Dragon. This fish is an endangered species protected by the Washington Convention.
Bone swallow tooth fish (bone swallow tooth fish) originated in Indonesia and is the most expensive freshwater ornamental fish species at present. Looks like arowana. Fish scales, snouts, gill covers, fins and tails are all red in different degrees. It is subdivided into orange, pink, crimson and blood red. Arowana is divided into Chili red dragon, blood red dragon and orange red dragon. There are grades, the higher the grade, the more expensive the price, and the red pepper dragon is the best. Jiaohonglong has bright red gill prints and scales, mainly with bright red outer edges. All the fins are red and the snout is red. When young fish have wings, their heads are pointed, and when they are adults, all the fins are red.
Jinlong: Also known as Huang Jinlong, English name: GoldenArowana. Its back is dark green, and its scale frame is shining with golden light. Unlike the red dragon, its cheek cover is bright gold instead of red.
Classification: Euonymidae, Euonymus.
Origin: There are several strains with different forms, among which arowana and arowana are rare. Arowana is native to Malaysia, as well as Star Dragon (Pearl Dragon) produced in Australia and Silver Dragon and Black Dragon produced in Amazon River in South America, all of which are relatively low-grade arowana.
Morphological characteristics: Huang Jinlong's graceful posture, broad scales, blue background and brilliant golden border show the invincible British style of golden armor warriors. Its gill cover is covered with pure gold, revealing a gorgeous and rich atmosphere.
The perfect arowana should keep a pair of dragon whiskers straight and tidy (although damaged, it can be regenerated, but it is difficult to ensure good growth), and the color and body color are consistent; Longan, which plays the role of finishing touch, should shine; Fins should be straight and stretched freely, and a perfect figure can fully show its prestige.
Arowana is an ancient relic species and an internationally endangered protected animal. Its reproduction and reproductive production are bound by the Washington Convention (CITES). The arowana produced in the arowana fishing grounds registered in Malaysia and Singapore is equipped with a pedigree coding chip.
Golden dragon is easy to distinguish from silver dragon and black dragon, but it is difficult to distinguish it from red dragon and blue dragon at the fry stage. Generally, people need to wait until it grows up to distinguish the blue scales of the blue dragon, which are generally not golden. The golden scales of the red dragon only grow from the abdomen to the fourth row, and the body color gradually turns red; As the name implies, a golden dragon with a back can grow on the back and cover the whole body.
Orange Dragon: English name: OrangeArowana. Specific information is being collected.
Bai Jinlong: English name: PlatinaArowana. Much like the name of a cigarette in Wuhan. Its shape is similar to a red dragon, and its scales are white and gold.
Qinglong: English name: GreenArowana. Shorter than other Asian arowana. The blue lateral line of scales is obviously developed. Purple stripes on scales are the most precious. Can be artificially propagated.
Beidu Jinlong: The scientific name of Beidu Jinlong is Scleropagesformosus, and the English name is MalayanBonytongue. Its origin is mainly in Malaysia and some in Indonesia. Its fish body/color is similar to that of the red-tailed golden dragon, but the golden scales are across its back, which looks more beautiful. There is little natural reproduction, and the prices of some good products are only lower than those of red dragons, and some varieties are even the same as red dragons.
The young golden dragon with a blue background is characterized by a thin gold frame with reddish spots. When it grows, the scales with shallow longitude will turn golden yellow, and the scales with golden blue or green background will reach the fifth row of scales, spanning the whole dark green back. The back and the upper half of the caudal fin will be dark blue, while the other fins will be golden red. Feeding is the same as all arowana. A golden dragon with a back is thinner than a red dragon. If the water quality deteriorates slightly, it is easy to suffer from skin diseases. Moreover, the edges of fish scales will be corroded and become serrated, which looks ugly.
There are two kinds of arowana in Australia: Starspotted Dragon and Starspotted Dragon.
ScleropagesLeichardti: It is found in eastern Australia and is very similar to the spotted dragon. Young fish are extremely beautiful, with a small head and many red star-shaped spots on the side. The gluteal fin, dorsal fin and caudal fin all have golden star-shaped spots. The adult fish is silvery white, with beautiful yellow, olive green dorsal fin and silvery luster on the abdomen. Every fin has a black edge. This is a nocturnal fish. In recent years, the Australian government has released a large number of fry of this fish, so the number will not be small.
Scleropagesjardini: It is found in northern Australia and New Guinea, with a small body, a pointed mouth, a golden body, a silver-colored middle, a half-moon scale, a little golden cheeks and golden stripes on the dorsal fin of the caudal fin. It is easy to raise and can be artificially propagated.
There are mainly three kinds of fishes in the family Brachyodontidae in South America: Silver Dragon, Black Dragon and Elephant Fish (also called Walrus and Giant Bone Tongue Fish).
Yinlong: Osteogloxssunbicirrohomus is mainly produced in the Amazon River basin of Brazil. 1929 was first discovered by ichthyologist Vandelli. It is a local edible fish. 1935 was introduced to the United States. 1955 was introduced to Japan. From 65438 to 0966, Mr Miyata of Kobe, Japan, successfully propagated artificially with hot springs in a tropical farm in Asu Changyang, Kyushu. However, what we see in the China market is very little artificial propagation introduced from South America through re-export in the United States. This kind of fish has huge scales and a pink semicircle. The fish body is metallic silver, which contains cobalt blue, blue and cyan. , and shine. Dorsal fin and gluteal fin grow backward, with long base, short caudal fin and large pectoral fin.
Black Dragon: The shape of Osteogloxssunferreirai is similar to that of a silver dragon. Adult fish are silver, but when they grow up, they tend to be black with purple-blue and gold stripes. Very ornamental. Young fish have obvious black stripes and yolk sacs hanging under pectoral fins, so Hong Kong people call them black dragon spit beads.
Elephant fish: Arapaimapirarucu is produced in Colombia and Brazil. It is very big and can grow to 5 meters long. Fish used as food in the country of origin. In recent years, due to the sharp decline in the number, it has been banned by the local government from fishing and selling, making it more difficult to export. I only saw a two-meter-long elephant fish in Wuhan New World Aquarium. The body is black and the scales have an orange-red frame. Very impressive. When its tail sweeps across the glass wall of the aquarium, it makes a loud noise.
There is only one species of African bone tongue fish called Nile arowana Heterotisniloticus, which is distributed in the middle and upper reaches of the Nile and tropical West Africa. Arowana similar in appearance to those in Asia and Australia. The outline from the snout to the front of the dorsal scale is not linear, and the mouth is large but not cracked, and it will only open when foraging. The body color is olive with gray instead of black. The Nile arowana in natural waters can be up to one meter long and weigh 6 kilograms. It can grow to 80 cm in an aquarium. It should be noted that this kind of fish eats plankton, such as earthworms and red worms, instead of eat small fish. Isn't it interesting for such a big fish to eat such a small thing? The upper parts of its fourth and fifth gills are spiral, similar to the respiratory organs of lost fish.