Young male guppies starting to be aggressive

[GuppiesAreCool]

I have six almost 3 month old male guppies in a 10 gallon tank. The two biggest males have started to be aggresive. They aren’t nipping at eachother and their fins look fine, but one will back the other into a corner. I guess it’s like they are smack talking. Do I need to get another 10 gallon tank? My parents think they are fine but I feel they will just get more aggresive as they get older.

 

[Back in the fold]

No need to worry. Guppies aren't that aggressive among their own kind. Listen to your folks.
Six Guppies in a ten gallon sounds like a nice little set up.