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Originally Posted by Blue
The question is why add salt when your livebearers can adapt. I don't think it is totally necessary at all unless the livebearers have been adapted before in conditions where salinity is high.
Personally, adding salt is a waste of time and money especially when your fish have adapted to non-salt conditions. Unless your fish really require the salt, I wouldn't add it if I were you.
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yes and no. true most tank raised fish don't know what their native water conditions are, however over hundreds even thousands of yrs, they have adopted many internal evolutions that have helped them adapt to native conditions. You would have to breed out these adaptations for a long time. We might not know what they have done to adapt, but rest assured they have inner workings that require them to have native water conditions and need that in order to fully thrive. Could be something as small as chemo receptors, but I'm sure they are there! IMHO anyhow
