Re: Aquatic Plants Digest V5 #484

["Richard J. Sexton" <richard at aquaria_net>]

>Cardinal tetras are very difficult to breed in captivity. Lemon tetras and
>others aren't nearly as hard. First, you need very very soft water for
>the eggs to get fertilized. 

The reason for this is, if there is any hardness to the water
the calciu, (etc) forms a coating on the outside of the unfertilized
egg and won't allow the sperm to penetrate. This is why some killies,
discuss, some Apistogtamma and many tetras can only be bred successfully
in extremely soft water.

If you can breed carndinals you can breed anything. Neons are a little
easier...



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