I set up my 30 gallon with the sole intention of only keeping male guppies because I was having so many fry being born that I didn't have space for them all. I read posts on here how you could keep all males instead and that they would be very peaceful with eachother HUH

I don't think so
I originally had 5 adult males in the tank and they got along pretty well. Then 2 died of old age

I had about 25 fry in a 14 gallon tank so I decided to put all the pretty ones in my 30 gallon and give the rest to my lfs. 6 turned out to be males and 5 turned out to be females. I decided to keep the males in the 30 gallon but move the 5 females back to the 14 gallon because I didnt want fry and the girls were too young to get pregnant. Well now that the 6 sibling males are 3-4 months old they have become so aggressive towards the older males.
The male who died today

I believe was old age but it was probably due to stress as well because the 6 sibling males were always harassing him. It seems the males only harass the other 2 bright males. I have a black male guppy and no one ever bothers him. The sibling males dont pick on eachother either.
Anyways I posted a week or so ago about this aggression and was told well no duh they are so aggressive they are horny and want to breed. So I ended up putting the 5 females back in with them but nothing has changed.
I have a feeling the 6 sibling males will eventually kill off the 2 bright boys. I dont know what to do. I feel like taking them all to my lfs so I dont have to watch them pick on eachother, die and whatever else. I wouldn't of chosen to kept guppies if I would of known how much trouble they were.
They are so beautiful though and thats why I cant just take them to my lfs. Especially since I raised them
