I am new to Convicts. I have 5 convicts in a 20 gallon long tank (3 females and 2 males) for the last 7 days. Here's the problem. The dominant male is beating the heck out of the other male. Two of my females are locking up lips and it looks like they are trying to fight each other. The tank has a good amount of hiding spots. All the convicts are fairly new to each other. Is this normal? What's going on?