Follow the advise about the size of the mollies (particularly sailfins, which need a 3 foot tank as adults) and the water changes. You do need to do a very large water change urgently and need to monitor your ammonia and nitrite levels daily until it is under control.
If you wish to add more fish, the only thing I can recommend is adding 2 more silver tips and 1 more neon, as these fish prefer larger groups and will exhibit more active, natural behaviour in larger groups.
It's never a good idea to compound the problem of big fish in small tanks by adding more fish, ven if the 'big' fish are babies.
If you wish to add more fish, the only thing I can recommend is adding 2 more silver tips and 1 more neon, as these fish prefer larger groups and will exhibit more active, natural behaviour in larger groups.
It's never a good idea to compound the problem of big fish in small tanks by adding more fish, ven if the 'big' fish are babies.