Pufferfish is a collective name for the bony fish of the family Pufferfish, commonly known as pufferfish. (Note: The pufferfish is incorrectly named, but is widely used, and the pufferfish can also refer to a freshwater mammal.) Since ancient times, the puffer fish eaten in China have all lived in the river, and are named "puffer fish" because of the chirping sound similar to the sound of a pig's cry when caught in the water. There are also "bubble fish", "blow belly fish", "puffer fish", "air drum fish" (Jiangsu, Zhejiang), "good fish, chicken bubble" (Guangdong), "chicken hug" (Guangdong), "turtle fish" (Guangxi), "wax head" (Hebei), "boat fish" and other names. In ancient times, it was called "lungfish". Pufferfish are warm temperate and tropical offshore demersal fish, inhabiting the middle and lower layers of the ocean, a small number of species into the freshwater rivers, when encountering external dangers, the entire body in a spherical floating water, while the skin of the small thorns erected, in order to defend themselves. Common are redfin oriental pufferfish, dark-striped oriental pufferfish, black gill rabbitfish, concave-nosed pufferfish, black-spotted fork-nosed pufferfish and so on.
【Nicknames】Bubble fish, blowing belly fish, air drum fish, good fish, chicken hug,
Turtle fish, street fish, wax head, boat bass
【Boundary】Animal kingdom
【Phylum】Phylum Chordata
【Class】Rayfin fish
【Order】Sturgeon
【Family】Pufferidae
【Genus】Oriental pufferfish genus
【Planting area】In the process of overwintering of pufferfish, we should always pay attention to changes in water temperature and weather forecasts, and make full preparations before the cold tide comes to ensure that the heating equipment can operate in time.
【Morphological characteristics】 Pufferfish, commonly known as "pufferfish", is a collective name for the bony fish of the family Pufferfish. The pufferfish are cylindrical in shape, have air bags, and will inhale and expand when encountering danger, generally 25-35 cm in length! The upper and lower jaws and teeth heal into 4 large tooth plates, 1 dorsal fin, and - ventral fin. -Scales or small spines. The whole is oval, bluntly rounded at the front and tapered at the tail. The snout is short, rounded and blunt; the mouth is small, terminal, and transversely lobed. The upper and lower jaws each have 2 plate-like incisors, and the middle seam is obvious. The lips are well developed, with the ends of the lower lip curved upwards on the outside of the upper lip. The eyes are small , the gill holes are small , an arc-shaped fissure , located in front of the pectoral fin , with small spines on the surface of the body. The dorsal fin is located very posteriorly, opposite the fin ; ventral fin ; the posterior end of the caudal fin is flattened. The back of the body is grayish brown, the side of the body is slightly yellowish brown, and the ventral surface is white; the markings on the back and sides of the body vary according to different species. There are many species, most of which live in the sea, but can also be found at the confluence of freshwater and sea and freshwater. They blow water and air in the water, causing the sediment to fly, and then prey on the creatures hiding in the sand. The teeth and jaws are hard enough to crush extremely hard shells.
【Growth habit】Migration Spawning in the brackish water area from the open sea to the estuary of the river every March. Only one species of dark oriental pufferfish enters the freshwater in groups, and spawns in the river from May to June; the amount of eggs carried is generally between 40,000 and 50,000 grains. In autumn, the water temperature drops, the river begins to descend, and like other species, it swims to the deep sea area, returning to the deep sea area for wintering in early December. Juveniles born in that year live in rivers or lakes through rivers, and do not return to the sea until the spring of the following year, and grow up in the sea until they are sexually mature before returning to the rivers to lay eggs. From April to June, pufferfish entering the Yangtze River lay their eggs in the middle reaches of the river or in Dongting Lake and Poyang Lake. Feeding habits Of the pufferfish, it feeds on fish, shrimp, crabs, shellfish, insect larvae, branches, copepods, and the leaves and filamentous algae of higher plants. It is generally rarely ingested during reproductive migration. Self-defense The pufferfish has a rounded body and is propelled mainly by its pectoral fins. Although this body can rotate flexibly, it is not fast and is an easy target to hunt. As a result, pufferfish have evolved self-defense mechanisms that are very different from those of ordinary fish. When threatened, pufferfish are able to quickly draw water or air into a highly elastic stomach, expanding several times in a short period of time to deter predators. The spiny puffers of the family Spiny Puffer even have spines on their bodies, and when they are expanded, the spines of the whole body will stand up, making it difficult for predators to swallow.
【Disease prevention and control】Disease prevention and control White mouth disease Viral disease White mouth disease This disease is a viral infection, prevalent in the high temperature period, the diseased fish are mainly fish under 1 year old, which can cause a large number of deaths in fish stocks, which is the most important disease in the breeding of pufferfish. Symptoms: The mouth of the sick fish is first blackened, then ulcerated, and then the grooves of the upper and lower jaws are exposed, showing a "rotten mouth". Internal manifestations are liver congestion and linear bleeding marks, and in severe patients, abnormal movements of frenzied swimming and mutual biting are present. Causes of the disease: Combined with various experimental results, the disease is a viral infection. The treatment methods that are still effective should be based on prevention, timely sorting and feeding to avoid excessive density, ensuring the high quality of bait, and timely feeding.