They are huge, but with the outside temps dropping the water temps to 50 they get sluggish, it is harder to catch them in the smaller indoor pond in the spring when its time to take them outside.Their indoor water temps stay in the 70s. They jump out of the water and things when trieing to catch them inside,.The move this moring only took 1 hour , from filling the pond, to moving the filter , catching the fish etc...