The pronunciation of triggerfish is tún.

Extended knowledge

Tetraodontidae. Scleractinia, a family under the order Pufferiformes, commonly known as leatherbacks. There are about 118 species in 16 genera. The body is stubby or subelongate-elliptic. The head and muzzle are broad and blunt. Individual species, such as leatherbacks, can reach 900 millimeters in length.

Mainly distributed in the Pacific Ocean, Indian Ocean and Atlantic Ocean tropics. Generally inhabits inshore and brackish water, some can enter the river, there are a few species of leatherbacks live only with freshwater.

Morphological Characteristics

Body length is generally about 200-300 millimeters, large up to 400-500 millimeters, individual species such as leatherbacks some up to 900 millimeters. The body is stubby or subelongate-elliptic. The head and muzzle are broad and blunt. The maxillary and mandibular teeth are fused into 4 plates with a central suture. Nostrils 2 and nasal valves ovoid protuberant; or 1 nasal valve lobate or forked tentacle-like; or no nostrils.

Body smooth, or with small spines. Dorsal fin 1, without fin spines; anal fin similar to dorsal; no ventral fin; pectoral fin lateral; caudal fin rounded, truncate, or crescent-shaped. Tail often with a distinct skin fold along both sides of the lower part of the body. There is a swim bladder and air sac developed.

Habitat

The fish is a bottom-feeding carnivorous fish. Voracious, the main food shrimp, crabs, shellfish and small fish and so on. The esophagus is enlarged into an air sac on the front ventral side and the back ventral side, and it can absorb water and air when it meets the enemy, so that the abdomen expands like a ball and floats on the surface of the water.

Breeding

Most species swim inshore from the outer sea in the spring to spawn in the intertidal zone and small gravel, the spawning season is generally in April to June; a few species anadromous to freshwater to spawn.

River puffer and pufferfish difference

1, family difference, pufferfish for the animal kingdom, chordata, vertebrate subphylum, mammals, true animals subclass, cetaceans, toothed whales, subsection of freshwater dolphins, mammals in the general family. Pufferfish for the animal kingdom, chordata, vertebrates, subphylum vertebrates, spoke fin fish, triggerfish, triggerfish family, oriental triggerfish genus fish.

2, toxicity difference, river puffer is distributed in the sea and rivers into the sea, organs and blood are highly toxic. Pufferfish mainly live in the river, the abdominal organs are non-toxic.