The pufferfish is also known as the air drum fish, and the pufferfish is the same kind of fish.
I. Appearance
1. Barbel: The barbel has a long body, slightly flattened, slightly bulging back, and the whole body is several times long and diamond-shaped, with a body length of about 40 centimeters. The head is small, slightly pointed, and the back of the head is curved. The muzzle is blunt, slightly protruding forward. Mouth terminal, horseshoe-shaped; lips thick, upper and lower lips connected at the corners of the mouth, post-labial sulcus not connected, maxillae prominent. Whiskers 2 pairs, anterior slightly shorter than posterior pair. Hypopharyngeal teeth in 3 rows, laterally compressed, apically slightly curved.
2, river dolphin: river dolphin body is cylindrical, there are air sacs, when in danger will inhale and expand, the body length of 25-35 centimeters. Upper and lower jaws and teeth fused into 4 large dental plate, 1 dorsal fin, no ventral fin. No scales or small spines. Whole body oval, bluntly rounded anteriorly, tapering caudally. Snout short, rounded; mouth small, terminal, transverse. Upper and lower jaws each with 2 plate-like incisors, with distinct mesial slits.
II. Distribution
1. Barbel: living in the upper reaches of rivers, inhabiting rocky gaps and deep-water caves. It is distributed in the Yuanjiang River basin in Yunnan, the upper reaches of the Xijiang River and Hainan.
2. Puffer fish: 54 species are produced along the coast of China, and can be caught along the coast almost all year round. In the Yangtze River and the Pearl River, the flood season occurs between spring and summer, and it is one of the main fishery objects along the coast and in the middle and lower reaches of the river.
Three, life habits
1, barbel: for the fast-flowing water in the lower layer of fish. It lives in the upper part of the river. Mainly feed on plants, decaying plant fragments and filamentous algae.
2. River dolphin: swims from the outer sea to the salty and freshwater areas at the mouth of rivers to spawn in March every year. The river puffer has a mixed diet, feeding on fish, shrimp, crabs, shellfish, but also eating insect larvae, branches and horns, copepods, and leaves of higher plants and filamentous algae. Generally little feeding during the reproductive migration.
Baidu Encyclopedia - Barbel (Carp)
Baidu Encyclopedia - River Puffer