CATDOLL : CATDOLL: How many species of grouper are there? Is the stream grouper a nationally protected fish?

1. How many types of grouper are there?

There are 4 types of groupers, including white grouper, black grouper, yellow grouper, and blue grouper. After the fry enters the tank, they will start to gnaw the board within a day. If the parent fish has laid its navel, it will lay eggs within one to two days. Parent fish that have not laid their navel will have to wait slowly.

During the breeding period, the fry should be fed, but do not feed them live bloodworms, because live bloodworms will destroy the fertilized eggs. It is best to feed them bloodworms or frozen bloodworms.

2. Is brook grouper a nationally protected fish?

Brook grouper is not a nationally protected fish.

The stream grouper is also called the rock grouper, the light-lipped fish, etc. There are some black spots on both sides of its body, and there are short whiskers on both sides of its mouth. This is a very small fish, generally about 10-15 cm long, and weighs no more than one or two taels.

The stream grouper is a group of fish that often moves in groups. The growth habits of the stream grouper are also very special. It only moves in some places in the south where the water is clear and there are many stones. They feed on some moss growing on the stones.

3. What kind of fish is grouper?

Grouper (Epinephelus sp.) belongs to the order Perciformes. It has an oblong body that is slightly flattened. It has a large mouth with an auxiliary maxilla and pointed teeth, some of which are enlarged into canine teeth. The body is covered with small ctenoid scales, which are sometimes buried under the skin. The dorsal and anal fin spines are well developed. The caudal fin is round or concave. The body color varies a lot, often brown or red, with stripes and spots. It is a large and medium-sized marine fish of warm water. Grouper is rich in nutrition, with tender and white meat, similar to chicken, and is known as "chicken of the sea". Grouper is also a low-fat, high-protein, high-quality edible fish. It is recommended by Hong Kong and Macao as one of the four famous fishes in my country and is a must-have delicacy for high-end banquets. Braised grouper with taro was originally a home-cooked dish in Shengsi fishing area, but now it has become a precious dish famous both at home and abroad.

4. Is grouper a herbivorous fish?

yes.

Grouper is an omnivorous freshwater fish that prefers to feed on plants. It is widely distributed in fresh and brackish water. In winter, it mainly feeds on algae and the rhizomes, branches, leaves, and fruits of aquatic plants. In spring, summer and autumn, it feeds on algae and the young branches, leaves, rhizomes, and seeds of some aquatic plants.

5. Is brook grouper a nationally protected fish?

Brook grouper is not a nationally protected fish.

The stream grouper is a small fish mainly distributed in the waters of southern my country. Its scientific name is smooth-lipped fish. It is a small fish of the genus smooth-lipped fish, belonging to the order Cypriniformes, family Cyprinidae, subfamily Cyprinoidea, and genus smooth-lipped fish. It is often called stream grouper, or grouper, rose fish, etc. in the folks.

This fish is generally small and slender, but it gets its name because it likes to live in clear streams with gravel bottoms, mainly feeding on plankton and aquatic insect larvae on stones and rock walls in the streams.

6. What animal doesn’t look like a fish but is a fish?

The lancelet is known as the least fish-like fish.

Amphioxus, also known as Bai's lancelet, slug fish, double-pointed fish or sea hair, is a precious marine animal. Due to its extremely special morphological structure, it has the characteristics of both invertebrates and vertebrates. It is a typical representative of the transitional type from invertebrates to vertebrates. Therefore, it is highly valued by the biological community at home and abroad.

The appearance of lancelet is very strange and interesting. It has a very small body, flattened on the left and right sides, pointed and thin ends, and a spindle-shaped body. It is generally only 4 to 5 cm long.

7. What type of fish is tilapia?

Tilapia - native to Africa, it is a tropical fish. The genus Tilapia includes more than 100 species, including subspecies. Tilapia has the characteristics of fast growth, high yield, omnivorous diet, few diseases and strong reproductive capacity.

8. What is the difference between freshwater grouper and saltwater grouper?

The main differences between freshwater grouper and saltwater grouper

1. Different living environments

1. Freshwater grouper is a tropical fish that grows in fresh water and can also grow in seawater with a salinity of less than 1%. Its suitable temperature range is around 30 degrees. When the water temperature drops to 20 degrees, its food intake decreases significantly. When the water temperature drops to 15 degrees, its body loses balance. Therefore, areas where the water temperature drops below 15 degrees in winter are not suitable for the growth of freshwater grouper.

2. Marine grouper is found in waters 10 to 30 meters deep in spring and summer, and 2 to 3 meters deep in midsummer. When the water temperature drops in autumn and winter, it swims to deeper waters 40 to 80 meters. The suitable temperature range is about 34 degrees, and the most suitable water temperature is 28 degrees. It has a wide range of salt adaptability and can survive in waters with salinity above 1%. It is a carnivorous and ferocious fish that preys on benthic crustaceans, various small fish and cephalopods by surprise attack.

2. Different market prices

1. Freshwater grouper price

Freshwater grouper has the advantages of fast growth, tolerance to low oxygen, high yield, strong disease resistance, and delicious meat. The current market price is 70 yuan per kilogram. However, the price of freshwater grouper varies in different places. In some places, the price of freshwater grouper is between 50-60 yuan. If it is a dead freshwater grouper, the price is mostly between 40-50 yuan.

2. Price of sea grouper

If it is farmed seawater grouper, the price is 30-40 yuan/jin, while wild grouper is 80-100 yuan/jin. But if it is red grouper living in the deep sea, the price is much higher than the first two, and the general price is 270 yuan/jin. However, the price of seawater grouper from different origins and years will also be different. (This price is for your reference only) Generally speaking, the main difference between freshwater grouper and seawater grouper is their living environment and market price. Freshwater grouper is much cheaper than red grouper living in the deep sea. If conditions permit, friends can still try seawater grouper, and the taste is expected to be extraordinary!

9. What are the characteristics of fish?

The shape, body temperature, bones and skin of fish are different from those of other animals. In addition, fish have an organ that other animals do not have - the swim bladder. The existence of the swim bladder is also the reason why fish can float in the water.

1. Shape

Fish have a variety of shapes, sometimes quite different, but in general most fish are elongated and streamlined. Generally speaking, fish that swim fast in the water have elongated bodies, while fish that swim slowly or live at the bottom of the water are relatively flat. But some fish have very strange shapes, such as seahorses. The smallest fish is less than 1 cm, and the largest fish (whale shark) can reach 18 meters.

2. Body temperature.

Fish are cold-blooded animals. The body temperature of some tunas and sharks (especially sharks of the family Carcharhinidae) is higher than the temperature of the surrounding environment. Bluefin tuna is the only warm-blooded fish.

3. Bones

The skeleton of a fish is made of cartilage (cartilaginous fish) or bone (bony fish). There are four to seven gills on both sides of the skull, of which the front one has evolved into the zygomatic bone. The spine of a fish is connected to the skull, the ribs in the chest are connected to the spine, and there are long spines extending from the spine on the back, tail and abdomen.

4. Skin

Fish have two layers of skin: the outer layer contains glands that secrete mucus, and the inner layer contains many connective tissues, scales and pigment cells. The outer layer of mucus helps fish reduce drag when swimming. Cartilaginous fish do not have mucus, but the tiny, tooth-like protrusions on their skin have a similar function.

5. Fish bladder

The swim bladder is an inflatable sac-like organ in the fish's body. Its main function is not breathing. Fish rely on the swim bladder to adjust their specific gravity. Fish can use the swim bladder to slowly rise or descend without moving. Most bony fish have a swim bladder, an organ for regulating buoyancy.

10. Cold-resistant fish?

All fish species in northern China are cold-resistant, such as the common carp, crucian carp, silver carp, bighead carp, grass carp, black carp, sturgeon, black carp, loach, yarrow, schizothorax and so on.