Max Size: 10cm

Sidestripe Rasbora (Rasbora paviana)

Sidestripe Rasboras are a very peaceful and adaptable species making them ideal members of the larger, well-furnished community aquarium. In addition, these Rasboras have no particular demands in terms of water chemistry; therefore, you can combine them with many of the most popular fish in the hobby.

Ideal tank mates for Sidestripe Rasboras could include other Cyprinids as well as Livebearers, Tetras, Rainbowfish, Gouramis, Loaches and Catfish. Designing a community aquarium based around one of their river basins or native countries would also be a worthwhile project with some exciting alternatives.

Sidestripe Rasboras are sociable by nature; therefore, it would be best to keep them in a group of at least six, preferably more, to get the best out of them in the aquarium. Like most fish, they will display better colours in the presence of their own kind, will be less nervous, and the display, on the whole, will be far more natural-looking.

Choosing decor is not as crucial as water quality and open swimming space. Keeping these fish in a large, well-planted aquarium or a set-up designed to resemble a flowing river would be better.

The substrate should consist of gravel, different sized rocks or smooth boulders, and you could also construct a river tank manifold to provide natural unidirectional flow. You can further furnish the tank with aquatic plants and driftwood branches for aesthetic value.

While most plant species will fail to thrive in these conditions, hardy species such as Bolbitis, Anubias or Java Fern grown attached to the decor is possible.

The aquarium needs to have a very tightly-fitting lid as these Rasboras are surface-dwelling species that are accomplished jumpers and can escape through the tiniest of gaps.

Sidestripe Rasboras are intolerant to the build-up of organic waste; therefore, it is essential that you perform regular water changes for your fish to thrive as the water in their natural habitats is pristine.

Sidestripe Rasboras have silvery bodies and a prominent narrow black longitudinal stripe along their sides, broadening into a diamond-shaped blotch on their caudal peduncle. Dark reticulated patterns outline their scale margins, and in some individuals, the caudal lobes display black tips. In addition, these Rasboras have yellowish dorsal fins with or without black tips.

Quick Facts
Scientific NameRasbora paviana
Other NamesNone
OriginsCambodia, Laos, Thailand, Vietnam
Aquarium LevelMiddle - Top
DifficultyBeginner - Intermediate
Best kept asGroups 6+
Lifespan4 - 8 years
Water Parameters
Water TypeFreshwater
PH6.0 - 7.5
GH2 - 12
73 - 79℉
22.8 - 26.1℃

Photos of the Sidestripe Rasbora

Sidestripe Rasbora
Sidestripe Rasbora

Natural Habitat

Sidestripe Rasboras are endemic to the Chao Phraya, the great Mekong and the Mae Klong River Basins. They are widespread throughout Thailand, including Laos, Cambodia and Vietnam. They have been recorded in the Xe Bang Fai and Nam Theun River Basins in Laos, and in Cambodia, they have been collected from the Tonlé Sap lake and river. The only confirmed occurrences from Vietnam are from the Dong Nai drainage in the south and the Duc My river in the country's centre.

Sidestrpe Rasboras have been collected from swiftly-flowing shallow forest hill streams with substrates of sand, gravel, boulders and small stones and have also been collected from sluggish lowland waters, including ponds and slow-moving rivers where leaf litter and silt tends to accumulate. There are few aquatic plants in their natural habitat; however, submerged parts of emergent species were common. In addition, there is patchy tree cover in their habitats, and the water is very clear.

What to feed the Sidestripe Rasbora

Sidestripe Rasboras are not fussy and are easy to feed. However, they will do much better on a varied diet. Therefore, it would be best to provide them with appropriately sized, high-quality dried food such as flakes and granules alongside regular offerings of live, frozen and freeze-dried food such as bloodworms, tubifex, brine shrimp and daphnia.

How to sex the Sidestripe Rasbora

It is somewhat challenging to differentiate between the male and female Sidestripe Rasbora; however, Sexually mature females are usually much rounder in their bellies and are often a little larger than males.

How to breed the Sidestripe Rasbora

It is unclear whether or not Sidestripe Rasboras have been bred in the hobby; however, it should certainly be possible.

Like most small Cyprinids, Sidestripe Rasboras are an egg scattering, constant spawner that presents no parental care. However,

if your fish are in good condition, they will spawn frequently.

In a heavily planted, established aquarium, small numbers of fry may start to appear without intervention. However, if you would like to increase the yield of fry, a more controlled approach will be required.

You can condition the adult group together; however, you will need to set up a separate breeding tank. It would help if you dimly lighted this tank and covered the bottom with some mesh with large enough holes for eggs to fall through but small enough holes so the adults cannot reach them or leave it bare. You can also use plastic grass matting, pebbles or marbles; these also work quite well.

The water itself should have a slightly acidic to neutral pH, and the temperature needs to be marginally higher than the general aquarium. You can add an internal power filter initially, and you should position this so that the flow is directed down the entire tank length.

Once the adult fish are well-conditioned and the females are noticeably full of eggs, you should then introduce one or two pairs to the breeding tank. You can encourage spawning by either adding small amounts of cooler water every few hours so that the tank is gradually topped and feeding them live and frozen foods several times throughout the day.

The adults will probably consume any eggs they find if given a chance, so it would be better if you removed them after a couple of days. At that point, you should take out the power filter and swap it for a sponge filter to avoid babies being sucked into it.

The incubation period is temperature-dependent; however, it usually takes between 18 and 48 hours for the eggs to hatch. The young will become free-swimming around 24 to 48 hours later.

You should initially provide your fry with Paramecium or infusoria, introducing baby brine shrimp and microworm once the fry is large enough to accept them.

Other Rasboras of interest

Black Line Rasbora(Rasbora borapetensis)
Chilli Rasbora(Boraras Brigittae)
Clown Rasbora(Rasbora kalochroma)
Dwarf Rasbora(Boraras maculatus)
Emerald Eye Rasbora(Brevibora dorsiocellata)
Exclamation Point Rasbora(Boraras urophthalmoides)
View all Rasboras
Date Added: 13/01/2022 13:37:24 - Updated: 13/01/2022 13:52:47