For a few million I'd just get a 1500 gallon tank and get a couple of red-tailed cats![]()
Rarest fish ever...the aquatic dog.
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hehe. Seriously though, it's probably the great white shark. Ok, so it's not exactly for the everyday aquaristBut no one has successfully kept one alive for more than a couple of months in captivity. It's a "holy grail" not because it's rare (which it isn't), but because they're hard to keep.
p.s. the dog picture's not mine, btw. don't freak out on me.