feeder FISH
...my parents used to have a giant cichlid named Tex that would even do tricks for the grandkids (they blow a kiss and he'd "blow" a kiss back.. he was a really cool fish that everyone was sad when he got old and passed away - more like a dog than a fish haha)...but anyways, if you didn't feed him something live for him to catch and eat at least once a month, he'd tear up the tank in frustration. I was standing in line buying "feeder fish" (small goldfish meant for feeding larger fish like our Tex)..and a lady behind me said "you're fish are so beautiful, you'll have such a lovely tank when you get home!" the look on her face when my reply was "thanks, but it'll only last about 5 minutes when my big guy catches and eats these pretty things".... priceless. She didn't realize "feeder fish" was even a thing. hahahahaha