If only I could convince my mother to let me use a potato for that... because it would mean boiling it without salt... she gets mad if i'd boil a potato just for the fish. Lol. But doesn't seem to have a problem when i ask dad to buy a whole salad just for ONE fish.My 2 hoplos love it, but nowhere near as much as my plasies... There's literally a flock of platies round it with morbidly large bellies... Your swordies would love it! - peel it and boil it until soft (basically, how you would have it) and just chuck it in!