No, they are not maxed out They should all end up abotu 3' long so they are over half grown. Luckily once they hit 18" or so (where they all are or larger) their growth really slows down so I should have another year or so before I have to worry about an upgrade if at all. Often they will not hit peak size. Most typically that species gar hits about 24" (which its almost there) and the endlis about 30"