Hahahah,true.All edible things have their role as "prey" basically.Unless so poisonous thats nothing can it eat.I saw on National Georaphic tonight a South American fish market on the banks of the mighty Amazon,and hey were splitting a 3 foot RTC in half.As well as having all kinds of keepable cichlids on the same table,ready to be bought and cooked.We see it as harsh because their not native to our waters and we keep them as pets.Pets are food too in some countries where not everything is prossesed food.If i could only find the link to a video i saw where a Japanese chef pulls a Datnoid out of a tank,takes a fillet out of it and places it back in the tank to which the "exoticness" of this kind of shushi came from the customer eating the fillet of the fish he is watching still very alive,still very swimming.