1, body surface: Hairtail with good quality, shiny body surface, full scale, no easy scaling, full wings, no broken belly and decapitation. The hairtail with poor quality has poor surface gloss, scales are easy to fall off, and there is only a small amount of silver and phosphorus in the whole body, and the fish body becomes fragrant gray, with broken belly and decapitation.

2, fisheye: good quality hairtail, full eyeball and transparent cornea. The hairtail with poor quality has slightly sunken eyeball and slightly cloudy cornea.

3, muscles: good quality hairtail, thick muscles, elastic. The hairtail with poor quality has soft muscles and poor elasticity.

4, quality: good quality hairtail, each weighing more than 0.5 kg. Hairtail with poor quality, each weighing about 0.25 kg.

No matter what kind of hairtail, it is better to buy a silver-pink film with broad body, bright eyes, white body and bright spots. If the body color is yellow, dull, sticky, or the flesh color is red and the gills are black, the broken belly is inferior hairtail, which is not suitable for eating.

Is hairtail a deep-sea fish?

Hairtail is also called nepotism, fat belt, oily belt, hairtail, etc. Hairtail is a marine fish but not a deep-sea fish. Hairtail belongs to trichiuridae, a suborder of vertebrates in Chordata, and it is fierce. Hairtail is slender, silvery gray and without scales, and its body length is generally more than 50 cm.

Hairtail is afraid of strong sunlight. During the day, the group inhabits the seawater and the lower water layer, and rises to the surface at night. Hairtail mainly lives in the offshore waters with a water depth of 20-40 meters. Hairtail has free spines in its abdomen. It swims upward by swinging its body without paddling with fins to prey on shrimps, squid and other small fish.