i got these 2 fairly recently dont know much about em other than they can grow up to 12" eat everything and can be kept in freshwater. anyone know more about em?

They do better as brackish water fish though they can be in fresh. There lots of info to find on caring for them just google it. They can be fin nippers to other fish. Can be aggressive toward themselfs unless kept in a small group of 4 or more.