What's funny about Acanthicus Adonis? I'd love a freaky three-foot long spiked tank in my aquarium! And those whips on their tails! And they are real buttholes, which equates to pleco personality as far as it goes. Mine died of bloat, but before he did, he was eating out of my hand. And they are easy to feed! Steady diet of fresh veggies along with what the other guys miss at feed time.
I'd go Australian lungfish all the way! Don't know how well the two would get along, though.