The mackerel has a green body and no eyebrows behind its eyes, while the sauger has two black lines behind its eyes that look like eyebrows, hence the name sauger

Corrugated Lip Fish

This entry has been reviewed by the project of the "Popular Science in China" Encyclopedia of Science Entry Compilation and Application Work.

This entry was reviewed by the "Science Popularization China" Encyclopedia of Science Entry Writing and Application Project.

Cheilinus undulatus (scientific name: Cheilinus undulatus): the body is prolonged and oblong-ovoid; the outline of the head is straight from the back to the eyes, and then convex; the forehead of the adult fish protrudes from the end of the mouth, and is moderately large; the upper and lower jaws have a row of conical teeth, and the anterior end each has a pair of large canines; the margins of the anterior gill cover bones are serrate, and the left and right gill membranes are healed and do not meet the isthmus; the body is covered with large, rounded scales. Adult dorsal and anal fins extend posteriorly to the base of the caudal fin; caudal fin rounded; ventral fins of older adults up to behind the anus. Juveniles light green, each scale with a black stripe; two black stripes behind the eyes. Adults green, with yellow-green and gray-green horizontal lines on each scale on the side of the body; head with orange and green reticulated lines; odd fin densely slanted lines; caudal fin posterior margin yellow.

Predominantly found on very steep reef slopes, seaway slopes, and lagoon reefs, at depths ranging from about 2-60 meters. Usually found alone, occasionally in pairs. It is a large species in the family Romeridae, with a gentle personality that makes it easy to get close to people. It is carnivorous and feeds mainly on fish and benthic animals.

The corrugated lipfish is a well-known giant fish that survives in offshore waters in the tropics. It is distributed in Oceania, the western tropical waters of the Pacific Ocean, the Great Barrier Reef, the northwestern Indian Ocean and the Red Sea. Its size is huge and flavorful, and it is used as a valuable food fish, as well as an ornamental fish in oceanariums or large display aquariums.

The bluegill

The bluegill is a synonym for the concubine fish. Also known as small carp. Swimming between the rivers, often one, two together, as if the green maid, so it is called the green fish. Green fish are distributed in the rocky or coral reefs between the tropics and subtropics in the shallow sea area, to pectoral fins swimming, posture is very peculiar.

The color and shape of the body of the fish are extremely varied, depending on the male and female and the age of the fish, the color and shape of the body are also different. It inhabits flat sandy or weedy areas near lagoons and coastal reefs, and deep-sea coral reefs. Solitary. Preys on crustaceans, mollusks and sea urchins. The species is a member of the Baidu family.

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