The adult radar fish is 7-9 cm long and cylindrical. The eyes are close to the front of the body, and the dorsal fin is divided in two. The spines of the first dorsal fin are tall and straight, standing on the back of the fish like an antenna. This antenna is not only used to show off beauty, but also a means of warning; petite radar fish in the ocean in pairs When members find danger, they will quickly swing the antenna to alert their partners.

The second dorsal and anal fins of the radar fish are symmetrical up and down. The front part of the fish is silvery white, the rear part is pink, and the caudal fin is purple. The feeding water temperature is 27-28 degrees Celsius, the specific gravity of seawater is 1.002-1.023, the pH value of seawater is 8.0-8.5, and the hardness of seawater is 7-9 degrees dH. The bait includes brine shrimp, fish and insects, and marine fish pellet feed.