The site has a great search function you can search by type of fish, your state or even the county. You can also search native vs invasive species. Looks pretty detailed on the ones I looked up.
It does have insects, fish, reptiles, birds, and other stuff so not just a fish site.
http://explorer.natu...e.org/index.htm
If it has been around before sorry to waste time just saw it as cool site.