Please help - in my 75 I had a pair of sub adult kribs -that began to breed- They were going nuts attacking my severums and balasani-I have a 20 gallon that has a juve kribs in that also began to breed- the sub adults are about an inch larger then the juves. In a rush i put the larger fish in - the juves are kicking their @$$'s any suggestions - I like the sub adult pair better should i get rid of the juves