Your Awsum,,
Well i dont know, the bigger of the two looks like a boxer, with this big mechanical lookin jaw, and the littler one ,, its jaw looks more,, like straight,, i dont know either, BUT,,
i do know, they hang out together, and once in awhile they will be at other ends of the aquarium,, ,, but no battle wounds,
My wife walked by the aquarium with a new pair of shoes, and i did see the littler one follow her along the front of the aquarium, and the bigger of the two, didnt pay any attention,(LOL)haaaa heeeee
thanks ill keep you posted,,
DENNIS