one fish has breeding tubercles on the first ray of pectoral fins i believe my other adult is a female since it is really fat and filled with eggs. they don't seem to be breeding however. i believe this is because it is warm
inside my house. the temperature never really gets past below 70 degree F.. temperature pretty constant. how do i encourage breeding?

Do a big water change.

Like how many percent of the water do I change?

hmmm I'll say about 70% plus. Might not work, it depends on the fish