Silver fish is a Columbian Cat Shark and one that's darker with the high dorsal fin is a High Fin shark. And I know My lfs doesnt bealive me but what's interesting most of them die early at 4" with chunks of skin missing and meat I would start acclimating them earlier then you think.i was going to say that looks like what we call a silver shark and i kinda hate places that sell them because no one ever tells the buyers that thay well need to be converted to brackish and then to a strat saltwater tank or thay will die. as for the other pic isent that a high fin baju i think im spelling it wrong lol
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