The lifespan of neon swallows is about 2 to 3 years. If you want to live longer, it is best to use weakly alkaline hard water to feed them. After understanding this, let's take a look at the morphological characteristics of neon swallows.

The neon swallow has a spindle-shaped body. Body length 4-5 cm. The body surface is mainly yellow-green, and the body color is composed of blue, yellow, red-black, white and other colors, and it is as beautiful as colorful silk under the light. Small head, big eyes. The dorsal fin is divided into two segments, the front and the rear, and there is a black-edged leucorrhea on the side of the body from the eye to the tail extending to the middle of the caudal fin. The caudal fin is yellow, fork-shaped, with black upper and lower edges, and is named after the shape of a swallowtail.