You cannot go wrong with Koloton or Koliba. Both are supposed to have a lot of patterns. Pay the extra money and buy a big one. You'll be glad you did. Mine are already pushing 18". I don't think you should get a moke since you're doing a Monster Fish Tank. A dabola is nice if you're into something rare and different but nobody outside of MFK know what a dabola is. It's just another bichir!!!!