More on breeding

We are still talking on breeding of coldwater fish.

The eggs, transparent, adhesive and the size of a pin head are laid in clusters, no two individual eggs being in contact. Within twenty four to forty eight hours, the infertile ones turn opaque, almost milky. There always seem so many of these that we might be frustrated, but patience and diligence are usually rewarded.

70 to 75 degrees F is a good temperature for the incubation and in four days, fry should appear. They are free swimming within forty eight hours and will need green water and infusoria. Most of all they need plenty of space. Warmth, space and ample food are all essential.

As many as one thousand fry can result from a good spawning, so that the problem of space is pressing. It is strongly advised to pick out the best specimens as soon as is practicable and to concentrate on them alone, disposing of the others. Aeration is helpful right from the commencement of the incubation period.