Dwarf Gourami

Trichogaster lalius

The dwarf gourami, Trichogaster lalius, is a small labyrinth fish from slow, plant-rich waters of South Asia, including floodplains, ponds, and rice-field habitats. It has also long been sold under the older genus name Colisa. Wild males are brightly barred in blue and red-orange, while females are usually plainer silver-gray; aquarium strains include powder blue, flame, neon, and other selected colors. Like bettas and other gouramis, dwarf gouramis can breathe atmospheric air using a labyrinth organ, which helps them survive in warm, oxygen-poor shallows.

In aquariums they are best kept in warm, calm, well-planted tanks with gentle filtration and a covered top that keeps the air above the water warm and humid. Males may defend territories, especially around floating plants where they build bubble nests, so they are not always as peaceful as their size suggests. They eat small prepared, frozen, and live foods and show better color when stress is low. Careful sourcing matters because some commercial lines have been associated with dwarf gourami iridovirus and other chronic health problems. Breeders condition pairs, provide quiet surface cover, and remove adults or fry at the proper stage to prevent losses.