30-11-2018, 16:44
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Rasbora dusonensis

Rasbora dusonensis inhabits water bodies in the islands of Sumatra and Borneo, South-East Asia. The fish can be found in forest channels and lakes with thick leaf litter on the bottom, snags and tree branches. The water in these areas has a brownish colouring due to chemicals released in the process of decomposition of organics at the bottom. The fish are unpretentious, and even beginner aquarists can manage.

Rasbora dusonensis has a silvery colour with a double longitudinal stripe of golden and dark colour. All of the fish's fins are yellowish. The females are slightly larger than the males and have a rounded abdomen. The maximum size of the fish is 10.5 cm.

Rasbora dusonensis

The Rasbora dusonensis is peaceful and can tolerate almost any peace-loving fish in the aquarium.

The fish require a relatively large aquarium, a volume of 100 liters. The fish are gregarious, so it is advisable to keep them in a group of at least 6 specimens. Keeping the fish in a group makes them less fearful, and the males will exhibit interesting behavior as they compete with each other for the attention of the females.

The decorations in the aquarium Rasbora dusonensis not make any special requirements, it is much more important to maintain high water quality and take care of enough space for free swimming.

Gravel of various sizes can be used as substrate. Large stones should preferably be placed along the back and side walls of the aquarium. Snags and tree branches can also be placed in the aquarium.

Rasbora dusonensis

Water parameters: temperature 20-26° C, hardness dH 1-12°, pH 4.0-7.5. Pisces are able to jump high above water, so the presence of an aquarium cover is a must. Quality filtration and aeration of water, as well as its weekly replacement of at least 1/3 of fresh.

In nature, the Rasbora dusonensis feed on aquatic and terrestrial invertebrates. Under aquarium conditions, they will eat a variety of dry food, as well as live and frozen food such as daphnia, artemia, moths. The fish should be fed once or twice a day.


At present we have no information on the successful breeding of Rasbora dusonensis in aquarium conditions and this is primarily due to the fact that these fish are relatively new, they first appeared in the collections of aquarists in 2013.

It can be assumed that the reproduction of the fish is similar to other species of Rasboras. The females spawn in the water column and the males immediately fertilise them. The eggs sink to the bottom and are presented to themselves, so the percentage of hatching fry will be catastrophically low - the producers can eat all their eggs.

Rasbora dusonensis

The eggs are incubated for 24 to 48 hours. The hatched fry are fed with dry food intended for fry, micro worms and artemia.

The Rasbora dusonensis has a life span of 3-4 years under aquarium conditions.

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