The big catfish is a red-tailed catfish, also known as the red-tailed catfish and paparazzi whale. It is native to the Amazon River. The fish body is up to 1 meter long, with a flat and wide head, back, chest, and abdomen, and a relatively flat and narrow hip and tail. It has small eyes, a large and wide mouth, and 3 pairs of long whiskers around the mouth. The color of the back of the head is light black with black spots, and the abdomen is creamy yellow. Between the black and creamy yellow, there is a white band running vertically from the snout to the tail peduncle, which is very bright.

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Big catfish: that is, the red-tailed catfish, a species of the catfish family, the catfish genus.

The fish has a relatively beautiful appearance, with an elongated, wide and flat body. There are 6 pairs of snow-white noble whiskers above and below the mouth, one of which is longer and often extends forward. The fish body color basically has three colors, gray-black on the back, snow-white on the abdomen, and orange-red on the tail fin. The demarcation is very clear, the head and snout are large, a white line extends from the snout to the tail, the tail and dorsal fin are both rouge, and the other fins are blue-black, with an elegant body.