Puffer fish, called "lungfish" in ancient times. It generally refers to the fish belonging to the diodontyte puffer family, trintial pufferfish family, tetraodontyceae and box pufferfish in the order Pufferfish. Also known as bubble fish, well-behaved fish, chicken hugs, turtle fish, ship mackerel, ancient name lungfish, is a general term for mammals, cetaceans, freshwater dolphins. It has four extant dolphin species that inhabit freshwater rivers and estuaries: three of them live in freshwater rivers, while the other species, the Prata pufferfish (La Pufferfish), lives in the saltwater estuaries and near-shore oceans, however, it is still classified in the scientific classification as a freshwater dolphin family rather than a dolphin family. Juvenile freshwater dolphins are gray and turn pink when mature, and pufferfish are the most human-friendly mammals among mammals, cute. Puffer fish, people generally refer to a kind of fish with delicious meat but highly poisonous flesh. When understood as a fish, it should be a pufferfish. Puffer fish is a collective name for mammalian freshwater dolphins, such as white-tipped dolphins.
<h3>Migratory</h3>
blowfish
Pufferfish swim from the open sea to the brackish water areas of the estuaries each March to lay their eggs. Only the dark eastern puffus (Obscure puffer) is a group of fish that enters freshwater and lays eggs in rivers from May to June; the amount of eggs 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.
<h3>Feeding habits</h3>
The pufferfish have a heterogeneous diet, feeding on fish, shrimp, crabs, shellfish, insect larvae, branches, copepods, and leaves and filamentous algae of higher plants. It is generally rarely ingested during reproductive migration.
<h3>self-defence</h3>
Pufferfish are rounded in size and propulsion mainly on 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.
This article was co-edited by headline wikipedia users Happy 1978 and Kei Asai.