Sardines.

Sardines are small, slender silver fish with a short dorsal fin and only one, and no scales. The body length of sardines is generally 15-30 cm. They are very short small sea fish, and sardines have no spines. So the little gray ice fish has less spines than sardines.

Sardines are fish in the family Herringidae and the genus Sardines. It is a slender silver fish with a body length of 15-30 cm. There are significant radial raised lines on the gill bones. The dorsal fin is short and only has one, no lateral lines, the head is scaleless, and the round scales on the sides of the body are of different sizes.