Kissing gourami is the sole member of the Helostomatidae family. It is distributed from Thailand to the Malay Archipelago. It is recognized by having a compressed and deep body, a dark bar across caudal peduncle, anal fin base bigger than the soft dorsal fin base, and 2 lateral lines. The lower lateral line starts below the end of the upper line.
Kissing gourami is found in freshwater streams, lakes, and ponds especially in slow-moving water with thick vegetation area. It is omnivorous feeding on benthic algae, zooplankton and aquatic insects near the water surface. It has the habit of sucking their thick lips and kissing other fishes.
There is only one genus with one species worldwide.