Beautiful arapaima (scientific name: scleropages formosus): also known as Asian arowana, arowana, is an ancient primitive freshwater fish, native to Malaysia, Indonesia, Sumatra and other places of rivers and lakes, adult body length of 40-50 cm, life span of up to decades, fierce temperament, mainly hunting live fish shrimp, aquatic insects, frogs, etc., broodstock will be laid in the mouth until hatching juveniles, so there is a common name of "dragon spit beads".
Firethrower fish, widely distributed in the tropical waters of the Atlantic Ocean and the Indian Ocean, body length of about 20 cm, is a kind of swallowing mesozoites can emit luminous substances of the heavenly snapper, online legend it has a subtle protective "weapon", usually can take in phosphorus-containing organic matter from food, and constantly stored in the body, once encountered enemies or ships, tens of thousands of fire-breathing fish will spit out this organic matter, phosphorus spontaneous combustion in oxygen, can spew out a beam of more than 3 meters long flames to shoot at the enemy, causing the enemy to be scared to turn around and flee.
The mammoth refers to the carrion found on October 5, 1924 in Margate Beach, South Africa, which was once rumored to be a mysterious creature trunko, but was actually the remains of a whale. This mysterious marine animal is as large as a whale, with long hairs all over its body and a protruding front end that resembles an elephant trunk, which is easy to think of mammoth, which is said to have a lobster-like tail and lives in a deep-sea environment. They are called "trunko", which means "fish like polar bears".
Obscene fish (yín yú) is the sturgeon (xún yú) (sturgeon), ancient called xún yú (xún yú), body length of 0.5-7 meters, sturgeon is the world's existing fish in the large, long life, the oldest kind of fish, has a history of more than 200 million years, originated from the Cretaceous period hundreds of millions of years ago, known as "water pandas" and "living fossils in the water", is the existing ancient biological population.
Puffer fishes (tetraodontidae; puffer fishes), a collective name for the teleost fish family, commonly known as pufferfish, pufferfish are warm temperate and tropical offshore demersal fish, inhabiting the middle and lower layers of the ocean, there are a few species into the freshwater rivers, when encountering external dangers, the entire body is spherically floated to the surface, while the small thorns on the skin stand up for self-defense.
Desert fish, as the name suggests. Many people think, "How can there still be fish in a dry, water-scarce desert?" However, the desert does live a species of fish called desert fish, which lives in the dead and silent swamp "Death Valley", which is still the lowest, driest and hottest region in North America, and the desert fish is its scientific name, which is an endangered fish species, because its survival depends entirely on the environment: the rare water source in the desert is a necessary condition for its survival, and the habitat of all populations is in a small pool in Death Valley, because the groundwater resources are depleted and endangered. Desert fish is a relatively small type of fish.
Vandellia cirrhosa is a parasitic freshwater fish found only in the Amazon River. Because of their translucent body and small size, vampire catfish are difficult to detect in natural conditions, they have very sensitive sensors that can detect traces of ammonia in the water, which is usually excreted from the gills of other fish that pass by, and the vampire catfish follow the traces of ammonia and nail sharp thorns on the gills of other fish, thus hiding themselves in the gills of the victim, sucking blood from the victim as long as they feel hungry.
Yellow-tailed paracanthurus hepatus (scientific name: paracanthurus hepatus) has a flattened body, a small mouth, a bright royal blue body, and a distinct palette of black bands, the dorsal fin and fin are royal blue with a wide black edge, the tail stalk and the tail fin are bright yellow, the upper and lower lobes of the tail fin have black edges, this black edge is connected with the black area of the fish body, so that the rear is isolated to form a triangular yellow area, the tail stalk spine is also in this area, the tail stalk spine is also in this area, the tail stalk is not obvious on both sides of the tail spine, the tail spine sheath is not obvious, and the upper half of the head is scattered with small black spots. Sometimes less obvious. The larger the fish, the lighter the color.