Tell me about it. When I had over 4,000 of these available I wound up with only 1 that actually followed through on an order.Blue catfish, Ictalurus furcatus.
These guys are extremely active for a catfish, they have tons of personality and respond to your presence at the tank and they are utterly fearless once they get about 10" or so.
And I can't say enough about the GORGEOUS metallic cobalt blue color.
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All in all, this is probably my favorite species of fish. Getting another is my top priority in the hobby right now.