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Maximum size : 15 cm

Opaline Gourami - Trichopodus trichopterus : Complete Fish Profile & Care Guide

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Opaline Gouramis, (Trichopodus trichopterus) are an exceptional addition to any aquarium. With their unique colors and attention-seeking nature, they bring character and excitement to a tank. They are also easy to care for, making them an excellent choice for beginner and experienced aquarists alike. Opaline Gouramis are peaceful and interact calmly with other tank mates, except for small fish that they are likely to eat. To avoid aggression between males, it is essential to keep them in groups. These fish enjoy plenty of swimming space, so it 's best to provide a tank of over 90cm in length with a dark-colored substrate and a good amount of aquatic planting to provide shelter. The body of an Opaline Gourami is elongated and flattened laterally, with large transparent pectoral fins and a long anal fin extending from the chest to the base of the tail. The body displays dark patches of different sizes and irregular shapes, which make them stand out in any aquarium. These fish are a color variation of the Blue Gourami and are sure to impress with their unique appearance. T

Opaline Gourami Photos

Sexual Dimorphism

In the Opaline Gourami species, the male can be differentiated from the female based on the fins. Specifically, the male 's dorsal and anal fins are elongated and pointed, whereas the female 's fins are shorter and rounded. This characteristic is helpful in identifying and distinguishing between the sexes of this species.

Quick Facts

Scientific NameTrichopodus trichopterus
Year Described1770
Other NamesMarbled gourami
OriginsChina Cambodia Laos Thailand Malaysia Indonesia Vietnam Myanmar
Max Size15 cm
Aquarium LevelMiddle
DifficultyBeginner - Intermediate
Best kept asGroups 5+
Lifespan4 - 8 years

Water Parameters

Water TypeFreshwater
PH6.5 - 7.5
GH5 - 35
75 - 82
23.9 - 27.8

Natural Habitat

Opaline Gouramis are native to the lush jungles of Southeast Asia. These stunning fish can be found in the River Mekong Basin in southern China, Laos, Vietnam, Thailand, Cambodia, Myanmar, and Malaysia. They can also be found in Java, Sumatra, and Kalimantan in Indonesia. In their natural environment, Opaline Gouramis inhabit shallow, still, and sluggish waters, such as swamps, marshes, and peatlands. These tranquil waters provide the perfect environment for these remarkable fish, where they can find shelter and feed amongst the lush vegetation. Interestingly, Opaline Gouramis can also be found in flowing streams and canals, as long as there is plenty of aquatic vegetation to support their unique needs. Recreating the ideal environment for Opaline Gouramis in your home aquarium requires a bit of effort, but the results are well worth it. So why not take a plunge into the enchanting world of Southeast Asia 's aquatic life and discover the wonders of Opaline Gouramis for yourself?


Opaline Gouramis reach sexual maturity between 8-12 months and are known to breed successfully in an aquarium. During spawning, the male constructs a bubble nest at the surface of the water and uses swimming behavior to attract the female. Once the female is ready to spawn, the male will gently embrace her body to aid in the fertilization of the eggs. He then gathers the eggs with his mouth and places them in the nest for fertilization. After laying up to 800 eggs, the female should be removed from the tank to prevent any further stress from the male. The male will protect and tend to the eggs until they hatch, and the fry becomes free-swimming. After this, the male should be removed to avoid any accidental deaths that may occur during the fry 's movements.

Diet & feeding

The Opaline Gourami is an omnivore, and they are not picky eaters. They should be provided with high-quality pellet or flake food as the mainstay of their diet. However, to ensure optimal nutrition and variety, supplementing their diet with live or frozen foods such as brine shrimp, bloodworm, mosquito larvae, or white worms is recommended. Blanched vegetables such as lettuce or peas can also be offered to provide additional nutritional value. They are known to graze on fine-leaved plants, which can be a source of entertainment and nourishment for them. A well-rounded and varied diet is crucial to maintaining the health and vitality of Opaline Gouramis.

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