Are you sure your other fish are old enough to breed or that you have females. Is the male with tubercles chasing any of the other fish? A way to make them think its spring would be to lower the water temp over a few days leave it for a few days then start bringing it up again. Also doing a big water change may cause them to start breeding. If you have a lot of fish in your tank you may not get any eggs though because they will eat them as your female lays them.
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10 Gallon
60 Gallon Tank
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