What is a notable feature of silverfish?

A notable feature of silverfish is that they move in a fish-like manner. This characteristic is reflected in their name, as their movements can resemble the quick, darting motions of a fish, which is quite distinctive among insects. Silverfish are agile and can quickly scurry away when disturbed, further enhancing this illusion of swimming through the air rather than running.

The other features mentioned in the options do not accurately describe silverfish. They do not possess bright red bodies; instead, they have a more silvery-gray, metallic appearance. Silverfish are wingless and cannot fly, which eliminates that choice as a defining characteristic. While they do have long, segmented antennae, this feature is common to many insects and doesn't uniquely identify silverfish. Overall, the combination of their unique rapid movement and body shape contributes to why this aspect is particularly notable.