Kabia rainbowfish
Glossolepis kabia
A rare and active schooling fish endemic to the Sepik and Ramu river basins of Papua New Guinea. Known for their silvery-green to blue iridescence, they inhabit slow-moving rivers, swampy lagoons, and oxbow lakes. Like most rainbowfish, they require ample horizontal swimming space and thrive in planted aquariums with stable, clean water.
Kabia rainbowfish At a Glance
Kabia rainbowfish Tank Requirements
Will Kabia rainbowfish fit in your tank?
Care guides tell you what Kabia rainbowfish needs, the next question is whether your tank can safely provide it. Test Kabia rainbowfish against your tank size, maintenance needs, and the fish you already keep before you buy.
Kabia rainbowfish Water Parameters
Kabia rainbowfish Temperament & Compatibility
Kabia rainbowfish Varieties
Each variety inherits the species defaults above. Only differences are highlighted.
Standard / Unsexed
Usually sold as juveniles when their distinctive body shape and vibrant colors have not yet developed. They must be kept in groups of 6 or more to feel secure and establish a natural hierarchy.
Same care requirements as the base species
Also known as: Juvenile
Male
As they mature, males develop a distinctively deep, 'high-backed' compressed body and exhibit much more intense silvery-blue/green pigmentation. Males will constantly display to each other and females.
Differs in 2 traits from base species
Also known as: Show Male
Female
Females remain more slender, lack the extreme high-backed profile of the males, and have paler, less intense coloration. It is recommended to keep more females than males to disperse courtship harassment.
Differs in 2 traits from base species
Kabia rainbowfish Care Guide Summary
The Kabia rainbowfish, scientifically known as Glossolepis kabia, belongs to the Rainbowfish family group. Adults reach a maximum size of approximately 10 cm and have a compressed body shape with a moderate growth rate. Classified as peaceful, this species primarily occupies the surface and mid-level zones of the aquarium and produces a low level of biological waste.
To thrive, the Kabia rainbowfish requires a freshwater only aquarium with a minimum volume of 150 litres and a tank length of at least 100 cm. Water temperature should be maintained between 24°C and 28°C, with a pH range of 7–8 and a general hardness of 8–15 dGH. A low water flow is preferred.
The Kabia rainbowfish is a rewarding species to keep, provided its core environmental needs are met. This species is available in 3 varieties: Standard / Unsexed, 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.
Kabia rainbowfish Habitat Setup
When setting up an aquarium for the Kabia rainbowfish, a low water flow best suits their natural preferences. Because this species occupies the surface and mid-level zones, the aquarium layout should prioritise adequate surface area with floating cover to make them feel secure near the waterline and open swimming space in the centre of the tank for free movement. Useful additions include light plant coverage for partial shade and dense planting to provide cover, break sightlines, and reduce stress. Keepers should note that a tight-fitting lid is essential, as this species is a known jumper.
Kabia rainbowfish Compatibility Notes
Classified as peaceful, the Kabia rainbowfish is a schooling species that feels most secure in a sizeable group, where natural shoaling behaviour reduces stress and brings out their best colours. When choosing tankmates, their energetic swimming style may stress more sedentary or timid species. Selecting tankmates that favour different water layers from the surface and mid-level zones can help reduce competition and territorial overlap.
Who Kabia rainbowfish Is Actually For
Kabia rainbowfish is best for a fishkeeper who wants a species that can settle into a calmer community setup and can provide a keeper who can commit to a proper group of at least 6. It makes the most sense for a hobbyist who will actually build around its needs, especially plants.
The most common mistake is buying Kabia rainbowfish for looks first and only later discovering how its adult size, behavior, or bioload changes the whole tank plan. Another frequent problem is underestimating its social needs. A token pair or trio often behaves very differently from a real group.
Kabia rainbowfish Recommended Tank Sizes
Standard aquarium sizes that meet the minimum volume and length requirements for Kabia rainbowfish.
55 Gallon Standard
60 Gallon Breeder
75 Gallon Standard
90 Gallon Standard
125 Gallon Standard
150 Gallon High
Frequently Asked Questions About Kabia rainbowfish
How big does Kabia rainbowfish get?
Kabia rainbowfish (Glossolepis kabia) typically reaches a maximum adult size of approximately 10 cm. They have a compressed body shape and a moderate growth rate.
What tank size does Kabia rainbowfish need?
A minimum aquarium volume of 150 litres and a tank length of at least 100 cm are recommended for Kabia rainbowfish. This ensures enough swimming space and helps maintain stable water conditions.
What water parameters does Kabia rainbowfish need?
Kabia rainbowfish thrives in freshwater only conditions with a temperature range of 24–28°C, a pH between 7 and 8, and a general hardness of 8–15 dGH. A low water flow is preferred.
Is Kabia rainbowfish peaceful or aggressive?
Kabia rainbowfish is classified as peaceful with an aggression score of 2 out of 10. They are generally well-suited to peaceful community tanks.
How many Kabia rainbowfish should be kept together?
Kabia rainbowfish is a schooling species and should be kept in groups of at least 6. Larger groups help distribute aggression and encourage natural schooling behaviour.
Does Kabia rainbowfish have any special tank requirements?
Yes. Kabia rainbowfish benefits from plants - densely covered and plants - lighly covered in the aquarium. These features help replicate their natural habitat and promote overall health and well-being.
Does Kabia rainbowfish need a lid on the tank?
Yes. Kabia rainbowfish is a known jumper, and a tight-fitting lid or cover is essential to prevent escape. Even a small gap can be enough for a determined fish to leap out.
Useful setup supplies
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Guidarium Editorial Desk
Reviewed against Guidarium care, stocking, and compatibility standards. Read the editorial policy.
- Last reviewed
- May 11, 2026
- Last updated
- May 11, 2026
- Issues or corrections?
- Contact the editorial team
Top Tank Mates for Kabia rainbowfish
These fish are strong compatibility matches for Kabia rainbowfish based on water preferences, temperament, adult size, and tank behavior.
Trapdoor Snail
Cipangopaludina chinensis
Ideal Tank MatesReticulated Stingray (Teacup Ray)
Potamotrygon orbignyi
Ideal Tank MatesTandanus Catfish
Tandanus tandanus
Ideal Tank MatesSkunk Cory
Corydoras arcuatus
Ideal Tank MatesSan Juan Cory
Corydoras bilineatus
Ideal Tank MatesPetricola Catfish
Synodontis petricola
Ideal Tank MatesPlants That Suit Kabia rainbowfish
These plants pair well with Kabia rainbowfish based on shared water preferences, layout fit, and how likely they are to hold up in the same aquarium.
Beckett's Water Trumpet
Cryptocoryne beckettii
Broad-leaved Crypt
Cryptocoryne pontederiifolia
Carolina Fanwort
Cabomba caroliniana
Crypt Wendtii
Cryptocoryne wendtii
Cryptocoryne Lutea
Cryptocoryne walkeri var. lutea
Dwarf Crypt
Cryptocoryne parva
Fish Similar to Kabia rainbowfish
Sepik Rainbowfish
Glossolepis multisquamata
The Sepik Rainbowfish, also known as the Rosy Rainbowfish, is a vibrant schooling fish native to the floodplains, swampy lagoons, and slow-moving rivers of New Guinea. They are highly active swimmers that display stunning metallic and red coloration. They thrive in densely planted aquariums with ample open swimming space and require a group to feel secure and display their best colors.
Mubi Rainbowfish
Melanotaenia mubiensis
A rare, energetic, and colorful schooling fish native to the clear, limestone-filtered streams of the Kikori River system in Papua New Guinea. As they mature, males develop striking colors and deep bodies. Like most rainbowfish, they are highly active, requiring long aquariums with moderate flow and moderately hard, alkaline water to thrive.
Blue Rainbowfish
Melanotaenia caerulea
A small, highly active, and colorful schooling fish native to the Kikori River system in Papua New Guinea. They are peaceful but require ample swimming space and a school of their own kind to thrive. Like most rainbowfish, they appreciate well-oxygenated, flowing water and are excellent jumpers. Males develop a striking blue hue with reddish horizontal stripes.
Silver Rainbowfish
Chilatherina crassispinosa
An active, schooling rainbowfish native to the clear, fast-flowing streams of Northern New Guinea. Known for their energetic swimming patterns and silvery bodies, they require long aquariums with strong water flow and high dissolved oxygen. Best kept in groups of 6 or more.
Ramu Rainbowfish
Glossolepis ramuensis
The Ramu Rainbowfish is a beautiful, active schooling fish native to the Ramu River basin in Papua New Guinea. In the wild, they inhabit clear creeks with rocky and gravel bottoms. They are fast, active swimmers requiring plenty of lateral swimming space. Males develop stunning greenish-purple backs with orange stripes, while females remain silvery. Best kept in groups with a higher ratio of females to males.
Misool Rainbowfish
Melanotaenia misoolensis
An active, schooling species endemic to the limestone karst streams of Misool Island in West Papua, Indonesia. They are found in moderately fast, clear waters flowing through primary rainforests. Like many rainbowfish, they are slow to mature but develop stunning colors and deep bodies as adults. They require hard, alkaline water and ample horizontal swimming space.