i've got my sights set on buying an alligator snapper... im gonna keep him in a 30 g until he outgrows it, then to the pond he goes... 

... he's still pretty small, around 4" carapace... then i realized, i might actually lose a finger... so i'm having doubts.... so does anyone have advice for me, or is there a turtle that's as cool, but doesnt want my finger?... thanks!! 
