How many species of ratfish are there What are the varieties of ratfish

Like heteromorphic fishes, ratfish have a body drape plate, and the first fin of the pectoral fin and dorsal fin are hard spines that can be used to protect themselves, but unlike heteromorphic fish, the bone plates on both sides of the body of the ratfish are made of equal hard scales at the top and bottom, dense and regularly arranged.

In addition, ratfish can also use the back of the intestines with rich blood vessels to breathe the air above the water (intestinal respiration) to survive difficult environments such as drought or lack of dissolved oxygen in the water, which is why we can often see ratfish suddenly swimming to the surface of the water to swallow air.

The relevance is as follows. The ratfish is a very typical benthic and social fish, with an extended snout end and three pairs of barbels characteristic of catfishes that help them to find food in the sandy ground, while the ratfish is omnivorous and quite tame, making it an excellent polyculture fish species in aquariums.

In the aquarium market, in addition to the genus Corydoras, there are two other genera of fish in the subfamily Corydoras, which are also often called ratfish, which are the slender Apsidoras and the archback catfish with more dorsal fin than the other two genera.

Brochis), but both genera are quite rare in the aquarium market, with Aspidoras pauciradiatus being the most common genus and Brochis mulitiradiatus being the most common in the Bowback catfish.

As for the other subfamily of the American catfish, the subfamily Callichthyinae is mostly represented by chariot rats (Callichthyid armoured catfishes) in the aquarium market, and there are very few other species that can be seen, and the ratfish belonging to this family can build foam nests under the water surface to complete the task of spawning and reproduction like the gill fish of the betta family, and its behavior is quite unique.

When the ratfish breathes on the surface of the water, it will rush to the surface of the water to take a breath, and then immediately rush back to the bottom, this is because the ratfish has a sense of self-protection, and it knows that it cannot stay on the surface of the water for too long, otherwise it will be caught.

1. The basic characteristics of ratfish

The ratfish, also known as the river rat and beaver fish, is scientifically known as "barracuda", which is a type of freshwater fish. It has a flat body with a triangular head, a large mouth, small scales, and a brownish-black body. In ratfish with a body length of about 25-30 cm, its head body length accounts for about one-third of the entire body.

The ratfish has two special organs: one is that it has lungs that are easy to breathe, which can take air when living underwater, and can also breathe air when living on land; The second is that there is a biceps-like structure at the 90-degree bend of the spine, which is an evolutionary structure that ratfish gradually adapts to living at the junction of water and land.

2. Introduction to the main varieties

At present, there are five known species of ratfish: black ratfish, gilly ratfish, black line ratfish, twisted ratfish and crockpot ratfish. Among them, the black ratfish is a unique and most common one in the Yangtze River basin of China.

It has a slightly flattened body with a tan body and black-brown spots on its back. The auspicious ratfish and the black line ratfish are mainly distributed in the Yangtze River and Pearl River basins. The twisted ratfish and the crockpot ratfish are distributed in the southeast coastal areas.

Different species of ratfish and their different habitat habits, so the growth and development are also very different. For example, the development rate of black ratfish is relatively fast in the early stage of growth, but it grows slower in adulthood; The auspicious ratfish has a faster weight gain in the late growth stage. Different species of ratfish also have different adaptability and value in farming.

3. The utilization value of ratfish

Because the meat of ratfish is dry and delicate, the taste is unique, the residue is disturbed and the fat content is low, and it does not contain cholesterol and yellowfin hepatoxins, so it is extremely safe to eat. In addition, there are special secretions on the body surface of the ratfish, which are often considered to have calming, anti-inflammatory, and antibacterial effects, and have certain medicinal value.

In addition, ratfish are also used in aquaculture and ecological restoration. In terms of aquaculture, the successful method of ratfish breeding is no longer the previous single method that only involves the breeding of black ratfish, but the establishment of a multi-species breeding system with black, auspicious, crockpot, black line, twisted and other ratfish species as the main body, which ensures the stable improvement of the breeding cycle and breeding efficiency. In the field of ecological restoration, ratfish can live in water bodies with heavy silt and organic matter, and the organic matter of the water body can be cleaned by ratfish to promote the healthy cycle of sediment ecosystems.

4. Common rat and fish diseases

The diseases of rats and fish are mainly divided into three types: bacterial land beam disease, parasitic disease and viral disease. Bacterial diseases are further divided into bubonic plague, lecelleriosis and methane. Parasitic diseases include oval fibrocysticercosis and Martelzeliosis; Viral diseases mainly include membrane virus disease and water silk virus disease.

In order to ensure the health of farmed ratfish, the following points should be noted: (1) strengthen the management of farms and keep the water clean and hygienic; (2) Select healthy and disease-free breeding fish; (3) Control the nutritional balance in the process of intensive feed cultivation and develop scientific feeding habits; (4) Inspect the fish body in time and isolate the diseased fish, and use appropriate drugs**.

This fish is mild and easy to raise, and is suitable for polyculture with other species of tropical fish. It prefers weakly alkaline water and usually prefers to move on the bottom of the water, but sometimes it suddenly rises to the surface to breathe air, and then quickly sinks to the bottom. The main suckers are the sand in the tank, the moss on the walls of the tank, the residue of other fish food.

Juveniles eat moss, and adults lick the scales of slower swimmers and can be fed fish feed. Miscellaneous food is included, simple to raise, and suitable for clean water quality.

What ratfish eat.

Ratfish can be fed with special feed, of course, red worms and silk earthworms are their favorites, and harvest shrimp is also fine.

How to raise ratfish and what to feed before eating.

The range of movement of the rat fish is mainly at the bottom of the water, so it is best to lay some bottom sand at the bottom of the fish tank to add some hidden space, which will make the rat fish feel safer. First of all, you can spread a layer of 1-2cm bottom sand, in addition to cultivating some nitrifying bacteria, you can also see the cute scene of ratfish sticking their beaks into the sand to feed.

What do panda ratfish eat.

Hello, raising panda ratfish, the last thing to worry about is that the fish will not be caused by eating unclean food or other diseases The glass feed is mainly frozen shrimp, frozen bloodworms, fresh earthworms, nematodes and JBL's ratfish patches with feeding. Panda ratfish prefer live bait.

Hope it works for you, hope

What feed each of the small fish and the rat fish eat.

Of course, small fish are small pellet feed, such as Baozenghong, ratfish are all sinking bottom feed, **a lot, there are many types**, depending on your own strength to choose.

What moss ratfish eat.

You mean the Jintai rat, it only eats moss and algae from glass and decorations, it is very diligent, and it does not need to be fed fish food, it is very easy to raise.

What do rat fish eat?

Eating fish in poop.

Trouble, thanks!

What do rat fish eat?

This fish can act as a scavenger, eating the moss in the fish tank, as well as the bait under the fish tank, algae, and various bait digging worms, and is an omnivorous fish.

What do ratfish wear and eat.

Hello, the last thing you don't have to worry about when raising rat fish is that the fish will not cause internal or other diseases due to eating unclean food. The feed is mainly fed with frozen shrimp, frozen blood worms, fresh earthworms, nematodes and JBL's rat fish patches.

Ratfish prefer live bait.

Hope it works for you, hope

Ratfish are ornamental fish, and they are relatively easy to raise. However, there are many issues to be aware of. For example, they have high water temperature requirements and need special attention to adjust.

In addition, they prefer shaded environments and are easily frightened, and they need to be provided with a safe and stable environment.

To breed ratfish, you must first prepare a suitable fish tank and provide them with enough space. The water is also neutral and needs to be changed regularly to ensure that the water quality is clean. They have relatively high requirements for water temperature, usually need to be controlled between 22-26 degrees, try not to exceed 30 degrees.

Feeding does not need to be fed every day, it can be fed two or three times a week, and fish feed, red worms and other foods can be fed.

To breed ratfish, you also have to pay attention to the feeding problem. Generally speaking, it is not necessary to feed it every day, and you can use the method of "more and less times". Feeding two or three times a week will do.

The food of choice can be some special fish feed, and ratfish are more likely to eat. There are also some animal bait, such as red worms, silk earthworms, etc., but this kind of food should not be fed too much, otherwise they may have indigestion.

The types of food that ratfish can accept are very diverse, so the choice of bait bai is as diverse as possible: harvest shrimp, frozen red worms, silk earthworms, flakes, pellet feed dao, etc., ratfish is an ornamental fish, and there are two small "whiskers" next to the mouth of the ratfish, which resemble a small mouse swimming in the water, so it is named "ratfish". When feeding, you don't need to change the water often, like the old water, and changing the water too often will make them suffer from ** disease;

Because the native place of the ratfish is in South America, they like the turbulent river, in order to make it adapt to the environment faster, it is necessary to increase the water flow appropriately and get a water pump. Ratfish also need some shelter or hiding place for rest, and some sunken wood can be placed appropriately when breeding.

Panda ratfish, also known as panda rat for short, English name panda corydoras, panda cory, scientific name corydoras panda, originally distributed in Peru and other countries in South America, because of its cute appearance was introduced as one of the many ornamental fish species, and now there are artificially bred varieties.

Panda ratfish, this small but famous ratfish species, in their fish eyes will have a black horizontal band through, dorsal fin and tail fin are born black spots, black and white with very distinct, just like China's national treasure giant panda, very beautiful and cute, so called "panda ratfish".

The panda ratfish has a gentle and lively temperament, and the adult fish is about 3 4 cm long, so it can be raised together with other tropical ornamental fish with the same docile temperament. Because the panda ratfish grows in Peru in South America, the water temperature requirement is about 22 28, the water hardness is about 4 18 °N, and the pH degree of the water quality is about pH value, which is an oviparous fish.

In order to better let them inhabit and survive in the aquatic plant tank, you can try to imitate the environment of the original place and lay small stones at the bottom of the water plant tank. In addition, they generally only move in the bottom part of the water plant tank, so you can lay a more delicate dark bottom sand to protect their tentacles from breaking when they are looking for food at the bottom layer. Panda ratfish have a mixed diet and prefer to feed on active bait.

If the number of panda ratfish is small, then you can set up some fake rocks or sunken wood in the aquatic plant tank for them to perch and hide. If the number of animals is large, they will feel more secure in the group swimming state. Although the panda ratfish are not very strong, as long as they are cared for, they will still be very lively and cute, and when they swim around in the water, they are like elves in the sky, which is very attractive.

When the panda ratfish entered the ornamental fish market, it was more expensive, but with the mass reproduction of artificial species, the current selling price tends to be flat and cheap. Still, there are some subtle differences between wild panda ratfish and captive-bred panda ratfish. Generally speaking, wild panda ratfish are stronger than captive-bred panda ratfish, and captive-bred panda ratfish are prone to death if not taken care of.

However, it is worth noting that in the process of artificial breeding of panda ratfish, there will occasionally be some pure white individuals, and the eyes are not ordinary and generally red, and the whole fish body is unusually white and transparent, which is one of the species that ornamental fish lovers are very worthy of collection.

There are many types of food that white rat fish can accept, so the choice of bait is as diverse as possible: harvest shrimp dao, frozen inner red worm, silk earthworm, flake volume, pellet feed, change feed, white mouse fish will definitely be able to raise white and fat.

If the rat fish is mixed with other fish species, it is necessary to pay attention to whether the rat fish has eaten something, because the amount of food of the rat fish is very large, and only eating some residual bait will be malnourished.

In fact, it is better to ask the ratfish what they don't eat, and the ratfish eat a lot of things.

The ratfish will find something to eat on its own, and the food or bait that sinks to the bottom is its food, and it can be fed to the ratfish with a hollow tube.

Bloodworms, high strength, cherishing blessings, nematodes, shrimp food, algae, and leftover bait are also food for ratfish.