CARING FOR THE PARENTS (Aquarium fish) Successful reproduction depends on
CARING FOR THE PARENTS Successful reproduction depends on the good health of the reproducing fish, and to achieve this they have to remain undisturbed, and therefore isolated, in a rearing tank. Their feeding is especially important, as the quality of the eggs, and above all that of the vitellin, depends on it. Fresh food, particularly live prey, must be provided, with an emphasis on variety. Although artificial food can be used as a substitute, it must never constitute the basic diet.EGG-LAYING One encouragement for egg-laying is light, whether it is the morning sun or the aquarium’s artificial lighting. Also, if you think that your fish are taking a long time to lay, you can change around 10% of the water volume, and this may provide them with the stimulus they need. Fish with free or non-adherent eggs When the eggs fall to the bed, they must be protected from the voracity of other fish - and this can be done in a normal aquarium. There are a couple of ruses that are useful in this situation: - divide the aquarium into two horizontal sections by means of a grille which only lets through the eggs; - cover the bed of the aquarium with glass marbles - the eggs will slide between them and can easily be recovered by siphoning them off. Most fish that produce free eggs do not take care of them, and the parent fish must therefore be removed from the tank to ensure that they do not devour them. There are some species within the Cyprinodontid family whose eggs can survive outside water, provided they are kept within a moist environment.
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