I only have 4 fish in my 125. i dont know why he snapped all of a sudden. last night i did see his darting around the tank which was kinda unusual. then the whole thing with the red eyes and chasing the jawfish happened. one guy told me that the white stripes in the eyes turning red is either excitement or anger. could it be that the sixline is just curious? and the jawfish just stressed from being chased? I didnt see any bites on the jawfish but his color seemed off on his tail and he wouldnt eat. Its a tiger jawfish and the gold stripes towards the end of his body were very pale. the rest are fine.