Tank setup for Breeding
These can easily reproduce in the aquarium tank, if given the right conditions and attention. The first thing that you must pay attention to, is that the pH level of soft water in the aquarium tank is just right close to 6.5.
Discus fish are very fussy about their surroundings, so a small or congested aquarium may discourage them for breeding. So, the tank must be at least 36 inches x 18 inches X 18 inches in dimensions to give an ideal space to them for reproduction.
The temperature of the aquarium must be maintained at about 82 degrees Fahrenheit, to give a warmer climate in order to encourage them to switch to their mating behavior. If the water quality of the aquarium is maintained and the water is recycled every week, it will surely result in a boom in the fish population in your tank
When they are ready to spawn, you must place an upturned clay pot or cone, which is fairly tall for them to lay eggs on. Here the fish will get a secure hatching area where they can lay and guard their eggs.
Breeding Behavior and Pairing
For breeding you need a young and healthy pair of Discus, you can buy a set of young Discus fish and when they grow, they will breed to give you a whole Discus school. You must have 6-10 Discus from different breeders to have genetic diversity to get a good and varied population.
You can also get a breeding pair from a reputed breeder and this way you may get the expected results, faster. When you have a breeding Discus to feed, you must provide protein rich and diversifying diet.
These fishes are highly territorial when they are in the process of pair bonding and at such times the male displays aggression, to claim right on the female Discus. This way the male gets a female as a mate and prevents another male Discus from the potential mating pair. You must keep an eye on such mating pairs, before the male hurts other males, and this mating pair must be put in separate aquaria.
Spawning and taking care of Fry
The spawning medium has to be placed in the center of the aquarium and the fish will spawn eggs after cleaning the area around this medium. The pair will mate and the female will lay eggs every week for fifteen weeks. If suitable conditions are given to the mating pair, they will be devoted to each other for the rest of their life and will have more offspring.
The Discus eggs are small, slightly opaque spheres, which will stick to the cone. The parent fish pair continuously fan the eggs for ventilation and this keeps them safe from infections. Discus eggs hatch after 48 hours of laying, when the fry will be ready to swim. At this time the young fish feed themselves and grow rapidly. To prevent the fry from becoming aggressive, they must be kept away from the parents and must be fed on commercial food. When they grow up to 2 inches in diameter, they can be sold or gifted to your friends.