Thanks Grif(s)!

Do you see a problem with having 5 in a 55 gallon tank? Haven't noticed any aggression "yet", they never try and dominate each other for food but almost take turns it's odd. They have all grown up being with another frog and I'm not sure if they know each other or how frog companionship works or if it exists. I know I read dwarfs are quite sociable so I assumed it may apply to the giants. Only thing that worries me is the 2 month old males are as big as my adult female and don't know if that can cause a problem later on when they surpass her size by quite a bit. They are always well fed and seem to all lounge around always together especially when wading in the water they always seem to have to be right next to each other.

Also, when should males start to make some noise? I'm so excited to hear them sing!