I think the rights and wrongs of this can be discussed (or argued) till the cows come home... To some people they are treasured pets, to others they are 'just fish' i know I have been on fishing trips, caught bait fish and left them to slowly suffocate until i need them and then i stick a hook on them. Ive also fed a 'less important' fish to one of mine and had it maimed and flounder around the tank for a while. On the the other hand ive also been genuinely upset when a fish has died. People will never agree what is right or wrong when it comes to animal cruelty (or not depending on the viewpoint) Im sure there are people that think it is totally unacceptable to flush a fish that would quite happily stomp a spider, or shoot a deer for fun. Im not pro or anti flushing by the way, just giving my 2 pence worth...