Silverfish can regenerate terminal filaments and antennae, if lost, in two to four weeks. This, coupled with its appearance and silvery scales, inspires its common name. It has long antennae, and moves in a wiggling motion that resembles the movement of a fish. Like other species in Apterygota, the silverfish is completely wingless. It also has two small compound eyes, although other members of Zygentoma are completely eyeless, such as the family Nicoletiidae. It has two long cerci and one terminal filament at the tip of the abdomen between the cerci. The newly hatched are whitish, but develop a greyish hue and metallic shine as they get older. Its abdomen tapers at the end, giving it a fish-like appearance. The silverfish is a nocturnal insect typically 13–25 mm (0.5–1.0 in) long. While the common name silverfish is used throughout the global literature to refer to various species of Zygentoma, the Entomological Society of America restricts use of the term solely for Lepisma saccharinum. saccharinum) indicates that the silverfish's diet consists of carbohydrates such as sugar or starches. Its common name derives from the insect's silvery light grey colour, combined with the fish-like appearance of its movements. The silverfish ( Lepisma saccharinum) is a species of small, primitive, wingless insect in the order Zygentoma (formerly Thysanura).
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