Trichogaster Lalius

Datasheet

General Description

The Dwarf Gourami, scientifically known as Trichogaster Lalius, is a common and visually striking freshwater species in the aquarium trade. Various color forms have been selectively bred, with the "Sunset," "Red," and "Neon" types being popular. Despite its beauty, the quality of available specimens has decreased, possibly due to the spread of Dwarf Gourami Iridovirus (DGIV), affecting their health. Possessing a labyrinth organ for breathing, these fish thrive in sluggish, densely vegetated habitats and reach a maximum size of 8.5cm.

Aquarium Setup

Wild Dwarf Gouramis prefer soft, acidic water with minimal flow, making them unsuitable for tanks with fast currents. Ideal tank conditions include a heavily planted environment with ample hiding spots, dark substrate, and floating vegetation to create a calming atmosphere. While tank-bred individuals are more adaptable, a well-maintained aquarium with sufficient shade and hiding spots is crucial for their well-being.

Behaviour

Dwarf Gouramis exhibit shy and territorial behavior, making them better suited as the primary inhabitants in smaller tanks. They can be housed with non-aggressive tankmates like certain cyprinids, loaches, and freshwater shrimps. Male aggression can be triggered by the presence of other anabantoids or brightly-colored species. Breeding pairs should be carefully selected, as keeping a group of males together can lead to aggression and potential harm to females.

Feeding and Diet

Considered omnivorous, Dwarf Gouramis feed on small invertebrates, algae, and aufwuchs in the wild. They readily accept a varied diet in captivity, including high-quality dried foods supplemented with live and frozen options like bloodworms. A diet rich in nutrients enhances their health and coloration.

Reproduction & Dimorphism

Dwarf Gouramis are bubble-nesting species, with breeding requiring a separate tank setup. Males construct bubblenests and guard the brood after spawning, becoming aggressive towards females. Sexual dimorphism is evident through the males' larger size, vibrant colors, and extended fins compared to the subtle appearance of females. Breeding can result in numerous fry that require specialized care and feeding.

Habitat and Distribution

These fish are widely distributed across Pakistan, northern India, and Bangladesh, primarily inhabiting slow-moving, heavily vegetated environments such as ponds, swamps, and streams. Although feral populations exist in various countries, all specimens in the aquarium trade are typically bred commercially, diminishing the chances of encountering wild-caught individuals.