not to put down king el or anything but go the the albino lungfish. I've never even heard of one being in Canada. A draw back is though that 75% chance you can't keep any fish with it...if it's a WAL that is. Aussie can be kept with fish.
I buy sea jewel shrimp and prawns from wal-mart. It's $5 for a fair sized bag which lasts me half a month. So $10 a month in shrimp or prawns to feed my fish. Then it's another $15-20 a month for pellets to keep a mix diet.