08-24-2012, 08:37 PM
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Haha! Do I smell another North American native fishkeeper in the works?
You should try looking up NANFA.
Unfortunately, I don't know of any online ID keys. I have field guides that I use to ID fish. The Peterson Field Guide to Freshwater Fish of North America is the one I most commonly use, but it's also rather technical. The Audobon Society has a guide that is a little less so and more picture heavy. I think your best bet is going to be that online guide. You won't have to click through hundreds of pictures if you use a little bit of science. A lot of what you will find will be in the order Cypriniformes. The shiners, dace, and minnows are going to comprise a lot of stuff. I know that's a lot of fish names, but it's more than the whole page. You will probably find some members of the Perciformes mostly in the families and Centrarchidae and Percidae. If you've looked through all of those order but still haven't found the fish you caught, then go through the rest of the page.