I got a pair of Paradise fish a few days ago for my 30 gallon cold water tank, but since I have introduced them they havn't been very active. They do seem to eat a small bit, but not much, the tank gets flakes and forzen food. Their tank mates are 14 Rosey Red Minnows. The water temp. is around 60C. Would the water temp. be a problem here? The water paramters seem fine.