Deep-sea fish, belonging to more than ten families, are characterized by large mouths and eyes and luminous bodies in one or several parts of the body. The bony fishes found in the deep sea are usually below 600 ~ 2,700 meters (2,000 ~ 9,000 feet). Lamps and lanterns are not only used to trap prey, but also to lure spouses.
Extended data;
Methods of selecting deep-sea fish:
Touch the fish body: there is transparent mucus on the surface of fresh fish, and the scales are shiny and close to the fish body, which is not easy to fall off; The mucus on the surface of stale fish is opaque, and the gloss of fish scales is poor, so it is easy to fall off.
Fish caught: fresh fish is firm and elastic, and the depression disappears immediately after finger pressing, without peculiar smell. The stale fish is not slightly loose, and the depression slowly disappears after finger pressing, with a slight fishy smell.
Look at the fish's stomach: the stomach of fresh fish does not swell, and the anus is white and sunken; The anus of stale fish protrudes slightly.
Look at the fish's eyes: the fresh fish is full and protruding, and the cornea is transparent and clear; If the eyeball is not prominent, the cornea is wrinkled or there is congestion in the eye, it is not fresh.
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