The breeding of Flowerhorns is a rather easy task. There are, though, a few preparations that need to be made prior to breeding. One of the most important things you can do is prepare ar new bare bottom tank to store the tiny fries once they are ready to leave the parents' nest. Do not install any filter mechanisms as the small fries will get sucked into the filtration system. An air stone is particularly sufficient for aeration purposes.
Selection of the breeding pairs is crucial prior to breeding. Desired phenotypic outcomes depend solely on the parents. Most of the time, it is almost possible to predict the external characteristics of the offspring produced by a pair of Flowerhorns. Thus, breeding Flowerhorn has an exciting aspect, as you would know the outcome of the selective breeding. Flowerhorns breed year round. No external stimuli are needed for breeding purposes, but you must place the breeding pair in a clean, big tank. An aquarium heater regulated to 28?C can be placed in the aquarium, but it is not compulsory. The use of a mechanical filtration system is sufficient to remove any feces and debris in order to keep the water quality in check as breeding pairs do not consume much food during this period.
If you intend to breed your Flowerhorn, you will need a few pairs of fish. Some pairs might not be suitable for each other. Normally, a mating pair is put in the same aquarium with a partition in the middle to separate the two. The female will usually develop black stripes all over its body when it is time to mate, and appetite loss is quite common. Observations also show that the female's genital papilla will start to swell. It is advisable to cover the sides of your tank with newspapers or any other materials. This provides adequate privacy for the mating pair as they are easily frightened or disturbed during the mating period. When they are ready, females will secrete pheromones, and this signals the males to start spawning. Initially, this pair will show aggression toward each other through the partition. When the pair has stopped showing this behavior, the partition can be removed. Once you remove the partition, if they still seem to be 'fighting', observe further. If one fish is standing its ground instead of running to another corner, it means that they are actually courting each other instead of attacking. If the pair continues fighting until one of them is visibly injured, it means that this pair is not ready or not compatible for the moment. Separate them and try again after a few days.
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