The general price of tropical fish is about 10 yuan a pair. If it is a wild tropical fish, the price will be much more expensive, generally ranging from 30-40 yuan.

When selecting, pay attention to tropical fish that are 3-4 cm long, thin in shape, beautiful in color, and green on the upper part of the body. The lines, sometimes blue depending on the angle of the light, are very harmonious with the red lines on the lower part of the body (red from the back of the abdomen to the base of the caudal fin).

Tropical fish have black eyes, with silver-blue eye sockets with black borders, giving off a turquoise brilliance. Above the lateral line, extending from the eye to the caudal peduncle, there is a light blue neon longitudinal band, which is bright and eye-catching.