Bella and Maisy question

Hello all, Bella has a new friend I named Maisy. She and Bella are have food aggression. When I give them a treat at the same time, whoever finishes first goes and steals the others treat. Also they seem to either be fighting at times or rough housing. Maisy the younger one crawls on Bella and then it seems they fight to where someone peeps. Any idea if this is typical behavior on these 2 issues? Thanksanic:

Very typical rat behaviour there! Rats don't share very well and will often steal food from others. Sometimes this may cause a small tussle, but as long as there is no blood, all is good! Some rats can get a little rough, but it's nothing to worry about.

lol Yep, exactly what mia9_28 wrote... rats don't share well.