Types of RasborasAlthough some species of rasbora are now endangered in the wild, they have been bred successfully within the aquarium trade, and there are several varieties available to buy:
- Harlequin Rasboras - The most popular kind of rasbora, these lively little fish have distinctive black triangular markings and red-tipped tails. They are hardy, adaptable, and relatively easy to keep.
- Dwarf Rasboras -With their bright, jewel colours and striking patterns, these delightful little fish are very popular, but they are delicate and are the most difficult kind of rasbora to keep successfully. They need a tank with very good filtration.
- Emerald Eye Rasboras -Attractive, highly gregarious fish with distinctive black dots on their dorsal fins, these are very active, hardy and easy to keep.
- Red Stripe Rasboras -These fish only display the stripe in their name when they're healthy and happy, so it's easy to tell how they're doing. They can be sensitive to pollutants and are difficult to breed.
- Scissortail Rasboras -Also known as three stripe rasboras, these bright, silvery fish have a distinctive swimming style. Lively and sociable, they're an excellent choice for community tanks.
Breeding RasborasRasboras are not easy to breed, but if you are patient and give them plenty of attention you can expect to be rewarded.
Sexing them is fairly easy - females are larger and more full-bodied than males, and the markings on males tend to be more angular.
If you watch your shoal of rasboras carefully you will soon identify couples forming within it. Rather than stress them when they are just about to spawn, you should move a suitable couple into a separate spawning tank as soon as they start to become physical with each other (close swimming, chasing and nudging in the belly).
The spawning tank should be heavily planted with a gravel substrate, providing plenty of places for sticky eggs to attach. Spawning will begin first thing in the morning and you should remove the parent fish immediately afterwards, as they will eat their own eggs.