Neon swallow, also known as fork-tailed mullet, is a small ornamental fish. When feeding, its living water temperature can basically be maintained between 23-26 °C. However, when the neon swallows enter the breeding period, the water temperature needs to rise, about 27-28 ℃, and the water quality should be weakly alkaline hard water.

Well-grown neon swallows, body sizeSpindle shape, body length between 4-5 cm, The head is small and the eyes are big. The body surface is mainly yellow-green, and the body color is composed of blue, yellow, red-black, white and other colors. Beautiful as silk. 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, forked, with black upper and lower edges, like a swallowtail.