A robust, semi-aggressive labyrinth fish available in many color morphs (Blue, Gold, Opaline). Biologically, they are all the same species. Unlike the peaceful Pearl Gourami, Three Spots are boisterous and can be bullies. They are excellent for 'semi-aggressive' community tanks (e.g., with Tiger Barbs, large Tetras) but may harass shy or long-finned fish.
At a Glance
Tank Requirements
Water Parameters
Temperament & Compatibility
Available Varieties
Each variety inherits the species defaults above. Only differences are highlighted.
Standard / Unsexed (Blue, Gold, Opaline)
The standard commercial form found in pet stores. Usually sold as juveniles. Because sexing juveniles is difficult, keeping only one per tank is recommended to avoid male-on-male violence.
Differs in 1 trait from base species
Also known as: Blue, Gold, Opaline, Cosby, Juvenile
Male
Identified by a longer, pointed dorsal fin. Males are highly territorial towards other Gouramis and should strictly be kept singly unless the tank is very large (120cm+).
Differs in 3 traits from base species
Female
Identified by a shorter, rounded dorsal fin. While less aggressive than males, they can still be bossy. Multiple females can usually coexist if space allows.
Differs in 3 traits from base species
Three Spot Gourami (Blue/Gold/Opaline) Care Summary
The Three Spot Gourami (Blue/Gold/Opaline), scientifically known as Trichopodus trichopterus, belongs to the Anabantoids family group. Adults reach a maximum size of approximately 13 cm and have a compressed body shape with a moderate growth rate. Classified as semi-aggressive, this species primarily occupies the surface and mid-level zones of the aquarium and produces a low level of biological waste.
To thrive, the Three Spot Gourami (Blue/Gold/Opaline) requires a freshwater only aquarium with a minimum volume of 110 litres and a tank length of at least 90 cm. Water temperature should be maintained between 22°C and 28°C, with a pH range of 6–8 and a general hardness of 5–25 dGH. A low water flow is preferred. To replicate their natural habitat, the tank should include plants - densely covered and plants - floating.
Only one Three Spot Gourami (Blue/Gold/Opaline) should be kept per aquarium. Keepers should be aware that this species may nip the fins of slow-moving or long-finned tankmates, can be aggressive toward its own kind, and will defend a territory within the tank. This species is available in 3 varieties: Standard / Unsexed (Blue, Gold, Opaline), Male, and Female. Each may differ slightly in size, temperament, or care needs, so it is worth checking the specific requirements of the variety you plan to keep.
Similar Species
Dwarf Gourami
Trichogaster lalius
A peaceful to semi-aggressive labyrinth fish native to South Asia. Famous for their brilliant metallic blue and red stripes. While generally suitable for community tanks, males are territorial toward each other and similar-looking fish. They are sensitive to water quality and prone to Iridovirus if stressed. Requires access to the surface to breathe.
Pearl Gourami
Trichopodus leerii
Widely considered the most beautiful and peaceful of the large Gouramis. They feature a 'mosaic' of iridescent spots and a distinct black line running through the eye. Unlike their aggressive cousins (the Three-Spot Gourami), Pearls are generally gentle giants, though males can be territorial towards one another. They are thermophilic (love heat) and require floating plants to feel secure.
Sparkling Gourami
Trichopsis pumila
A stunning nano species known for its iridescent blue/green eyes, body spots, and ability to make audible 'croaking' sounds. Unlike many anabantoids, they are social and best kept in groups. However, they are efficient micropredators that will hunt shrimp fry and pests like hydra. Requires stable water parameters and dense planting.
Honey Gourami
Trichogaster chuna
The smallest and most peaceful member of the Trichogaster genus. Ideally suited for planted nano aquariums. Unlike the aggressive Dwarf Gourami (*T. lalius*), Honey Gouramis are timid and gentle. True Honey Gouramis rarely exceed 5cm. Note: Many bright red fish sold as 'Red Honey' or 'Red Robin' are actually Thick-lipped Gouramis (*T. labiosa*), which grow larger.
African Jewel Cichlid
Hemichromis bimaculatus
A strikingly beautiful but notoriously aggressive West African riverine cichlid. Unlike the alkaline-loving Rift Lake cichlids (e.g., Mbuna), Jewel Cichlids prefer neutral, softer water parameters. They are renowned for their brilliant red breeding dress and iridescent blue spots, but also for their extreme territoriality, especially when forming pairs and spawning. They are avid diggers and will uproot most plants.
Scarlet Badis
Dario dario
One of the smallest known aquarium fish, resembling a tiny jewel. Males display brilliant vertical red and iridescent blue stripes. While beautiful, they are known for being extremely picky eaters, often refusing dry foods and requiring live or frozen micro-foods (Daphnia, Baby Brine Shrimp). Males act like tiny Cichlids and will stake out territories.