CATDOLL : CATDOLL: How big can tilapia be raised in four months? What are the characteristics of tilapia?

1. How big can tilapia be raised in four months? What are the characteristics of tilapia?

1. Under good breeding conditions, tilapia can grow to about 0.5-0.8 catties in three months, and basically reach more than 1 catties in four months. The breeding cycle of tilapia is usually between 4-6 months.

2. Tilapia, commonly known as: African crucian carp, African crucian carp, Vietnamese fish, South Sea crucian carp, etc. Originally refers to the mouth-brooding African crucian carp species with Mozambique as the model origin: Mozambique mouth-brooding African crucian carp, now a common common name for several species of fish in the genera of Cichlidae and mouth-brooding African crucian carp, etc., growing rapidly, especially in the juvenile stage. The growth of tilapia is closely related to temperature, the growth temperature is 16-38℃, and the optimum temperature is 22-35℃. Tilapia has a wide range of food habits, most of which are omnivorous and mainly plant-based, very greedy, and eat a large amount of food.

2. Characteristics of Baiji Dolphin

Cute white dolphin

Baiji (Lipotes vexillifer) is a vertebrate, mammal, freshwater dolphin family. Also known as the white-fin dolphin. It is a small whale endemic to my country. Its body is spindle-shaped, 1.5 to 2.5 meters long, and can weigh up to 230 kilograms. Its snout is long and narrow, about 30 centimeters long, and slightly upturned at the front. Its blowhole is long and located on the left side of the top of its head. Its eyes are very small, located above and behind the corners of its mouth. Its ear holes are pinhole-shaped. Its dorsal fin is triangular, its flippers are wide, blunt at the end, and its caudal fin is crescent-shaped. Its back is light blue-gray, and its belly is white. Baiji mainly lives in the middle and lower reaches of the Yangtze River and the waters connected to it, such as Dongting Lake, Poyang Lake, and Qiantang River. It usually lives in pairs or more than 10 heads together, and likes to move in deep and fast waters. Baiji is a carnivore with about 130 sharp teeth in its mouth, all of which are of the same type. It feeds on freshwater fish, often swimming to the shallow water near the shore to hunt at dawn and dusk. It also eats a small amount of aquatic plants and insects. When breathing, the head comes out of the water first, then the whole body is exposed to the water surface, swimming 2 meters above the water surface before returning to the water. The lifespan can reach more than 30 years. The Baiji dolphin relies on echolocation to understand environmental changes, which has extensive scientific research value in biology, bionics and physiology. In recent years, scientific research on the Baiji dolphin is being carried out in Hubei, Anhui and Jiangsu. Due to its small number and the fact that it is a rare ancient animal in the world, it has been listed as a national first-class protected animal.

3. What are the characteristics of fish?

A general term for aquatic cold-blooded vertebrates belonging to five classes. The differences between the classes of fish are as great as those between the classes of terrestrial vertebrates. It is generally believed that fish are aquatic animals with smooth, spindle-shaped, streamlined bodies, fins, and gill breathing, but many species do not meet this definition. Some fish have very long bodies, while others are very short; some are laterally compressed, while others are flat; some have large or complex fins, while others are degenerate and even digested; the shape and position of the mouth, eyes, nostrils, and gill openings vary greatly; some fish breathe air and will drown if immersed in water. Fish are an important food for humans. Overfishing, pollution, and environmental changes can all damage fish stocks. Fish prey on mosquito larvae, which helps control mosquito-borne diseases such as malaria. Fish are important experimental animals in behavior, physiology, ecology, and medicine. Many fish are kept for ornamental purposes, and many species are game fish. The length of the fish ranges from less than 10 mm (0.4 inches) to more than 20 meters (60 feet), and the weight ranges from about 1.5 grams to about 4,000 kilograms (8,000 pounds). The body color is mostly consistent with the environment and has a concealing effect. Some fish have bright colors and stripes, which are of identification significance. Some fish can expand and contract pigment cells to change their body color, and some fish can glow.

Fish are a type of aquatic, cold-blooded vertebrate that breathes with gills and has jaws and fins. Existing fish can be divided into two main groups: cartilaginous fish (such as sharks) and bony fish (fish with thread-fins and wavy fins). Both groups of fish first appeared in the Early Devonian. The more advanced group of thread-finned fish, called bony fish, began to evolve in the Jurassic period and have become the most numerous fish today. There are also several extinct fish.

Fish have gills, so they can breathe in water, and they have swim bladders, so they can sink and float freely in water.

4. What are the characteristics of fish? Say the name

The characteristic of fish is happiness. Because fish's memory is only seven seconds. After seven seconds, they forget everything and continue to swim freely. Thank you

5. Fish body surface characteristics

A type of vertebrate that lives in water, usually has scales and fins, breathes through gills, and is cold-blooded