I've not heard that one yet lol! I have heard that wether (dojo) loaches were, but I suppose since clowns do get pretty large it makes sense.Don't get offended loachrcool, but did you know Clown loach are common cuisine in Japan? We would never think of it. Weird huh?
Its only odd for us since to us they are pets. But really though, if its edible then someone is eating it somewhere...
It was just a random thought, I've not researched yellow perch at all. Just was thinking of what was available locally (at least where my folks live) and was small (plenty of fish that I used to fish for that are a tad big for aquarium... lake trout, salmon, pike...) so the first thing that came to mind was sunfish (in which the pumkinseed looks pretty colorful, and then perch. Probably the smallest thing that I used to love to fish for was brook trout but I think they need much cooler waters. Used to fish them just as soon in the year as there was some openings in the ice over the streams.Good Luck with Yellow Perch. I've tried to keep them, but after awhile they always die. From my online research they are just not well suited for aquarium life.