The Three Spot Gourami is a freshwater fish introduced to Sri Lanka and is now found in a variety of freshwater habitats, including ponds, reservoirs, marshes, irrigation canals, rice fields, and slow-moving rivers. It prefers calm or gently flowing waters with dense aquatic vegetation, where it can find shelter and forage for food. Like all gouramies, it possesses a specialized labyrinth organ that allows it to breathe atmospheric air, enabling it to survive in waters with low oxygen levels. This species is generally peaceful but can become territorial, especially during the breeding season or when defending nesting sites. It is an omnivore, feeding on algae, aquatic plants, insect larvae, small crustaceans, worms, and other tiny aquatic organisms. Males construct bubble nests among floating plants and guard the eggs until they hatch. Owing to its hardiness, attractive coloration, and adaptability, the Three Spot Gourami is a popular ornamental fish, but as an introduced species in Sri Lanka, it may compete with native freshwater fishes in some habitats.