why not? if you have a tank big enough... :-)
sharks are known to enter freshwater, even miles
inland into the amazon. sharks and piranhas together,
how's that???? not just sharks, but herrings,
grunters (Sciaenidae), sawfish, toadfish, are all part
of the amazon ichthyofauna, not to mention all the
FW-evolved stingrays. and many of these saltwater
invaders also occur in other parts of the world, such
as the mekong basin.
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tsuh yang
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