What once was ubiquitous, at least in the South, is now becoming rare as hens' teeth. There is a substantial difference between whole fried catfish and fried catfish fillets. We are not talking about the latter, which seems to have replaced the whole fish in most restaurants.
We just spent several fruitless hours trying to find whole catfish while driving around northern Mississippi. Finally, found Jack & Rips BBQ in Grenada, MS, where the whole catfish plate included barely one catfish.
Here in Atlanta, the only place we know of to get fried whole catfish (3 to the plate) is Folks Restaurant (a chain of 11 restaurants in the Atlanta area). It's pretty tasty.
How about researching where one can still get fried whole catfish?