Family: Cyprinidae
Distribution: Rasbora dusonensis, commonly known as Rosefin Rasbora, is an Asian freshwater species found in the Malay Peninsula, Sumatra, Borneo, and in the Mekong and Chao Phraya basins. It prefers slow currents and is usually found near or at the surface of large rivers.
PH: 5.0 – 7.5
Temperature: 23°C – 26C (73 – 79F)
Hardness: 2 – 12 dH
Description: Rasbora dusonensis can reach a maximum length of around 12 cm. It has a dark grey mid-lateral stripe which doesn’t extend onto the caudal fin. The caudal fin usually has a black posterior margin; there are three scale rows between the mid-lateral stripe and the mid-ventral row. Females are rounder-bellied than males and, in many cases, slightly larger.
Diet: This omnivorous species will accept dried foods in an aquarium environment; a daily meal of live and frozen food will enable Rasbora dusonensis to display its most prominent colouration.
Breeding: The Rosefin Rasbora is an egg-scattering, continuous spawning species that is tough to breed in a captive environment. You could try keeping the adult group in a long, shallow tank that is half-filled with water, dimly lit and covered with a mesh so catch the eggs and protect them from the cannibalistic adults. The water should be slightly acidic to neutral and at the warm end of the advised temperature spectrum. After conditioning the adults on live foods, introduce them to a tank and add small amounts of cool water every few hours to trigger spawning. Remember to remove the adults from the tank once the eggs are apparent. The eggs will hatch in 18 – 48 hours and the young will be swimming freely 1 – 2 days later.
Comments: You could probably house a small group of Rosefin Rasbora in a 255 litre tank. Your tank should have plenty of open swimming space, as well as densely planted zones, a rocky substrate and plenty of water movement. Have a tight lid to prevent Rasbora dusonensis from jumping out of the tank. This species requires moderate care and is suitable for people with some experience in the hobby.
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Recommended Compatible Species: Rasbora dusonensis is a peaceful species that should be housed in groups of at least six to calm its nerves. They will live happily with most Tetra species (particularly the Neon Tetraand Black Tetra). They are also great tank mates with Discus, Apistogramma‘s like Apistogramma Cacatouides and Apistogramma Borelli, CorydorasCatfish (particularly Corydoras Sterbai and Corydoras aeneus) Angelfish, Clown loach, the common Guppyand Platyand most Gourami(such as the Blue Gourami and Dwarf Gourami like the Honey Gourami) Also can live happily with most Danio(particularly the Zebra Danioand Pearl Danio) and also many Killifish make great tank mates.
Originally posted 2010-01-24 20:03:37. Republished by Blog Post Promoter
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