That is apsalotly terrible! I can't believe it!
I only bring home the mackerell and bass that i catch, because the family likes them, but if i don't want to take them home, i just PLACE them back in the water, i don't throw them in the bush! I read in a book that if you just want to go fishing for the pleasure of catching them, but you don't want to harm or eat them, there is a way of putting them back unharmed. Just take the hook out immidiatly, place them back in the water as soon as possible, but hold them under the water for 10 - 30 seconds, and then release them, and they'll be fine! That's what i've been doing latley, although i have been bringing home some mackerell.
Tight Lines!