The blue pseudo black tailed catfish (scientific name: Paracaesio caerulea), also known as the green red snapper, green chicken, and large gong, is a species of the genus Paracaesio in the family Cichlidae. Produced in northern, eastern, and southern Taiwan. The body is elongated and slightly skewed; The standard body length is approximately 2.7-2.9 times the body height. The distance between the eyes is significantly prominent. There is no groove in front of us. The lower jaw protrudes slightly from the upper jaw; The end of the maxilla extends below the anterior edge of the eye; The maxilla lacks scales. The upper and lower jaws have band shaped teeth, the outer teeth are enlarged, and the front teeth are canine shaped; A hoe with teeth. The body is covered with small and medium-sized comb scales, with bare scales on the dorsal and anal fins.