Let me first say that I don't use measuring devises most the time I cook, I mainly start out with small amounts of each ingredient and add to suite my taste. With this said I have cooked Catfish many different ways from pan fried to baked on my smoker. The other day I wanted to try something a little different so I decided to try making some croquets out of catfish instead of Salmon (which I also throughly enjoy eating).
 Here is what I used, again keep in mind I didn't follow a recipe and I don't have exact measurements.

1) Aprox. 2 to 3 cups bread crumbs (I used  regular bread crumbs that I mixed with panko bread crumbs.
2) Aprox. 1 cup buttermilk cornmeal
3) About 5 green onions. I like mine diced kind of course.
4) I added Old bay seafood seasoning to taste (about a tablespoon)
5) I added crushed red pepper (I'm stupid when it comes to adding spicy fire to my food. I would eat habanero ice cream if they made it
6) a couple eggs(I have a friend that gives me free large double yoke eggs, so you might want add another egg till you can get the meal to clinge together)
7) Aprox. 1/2 cup of buttermilk
8) About 6 to 8 regular size (3lb fish) fillets cooked

I didn't add anything other than lightly brushed on Olive oil to my fillets when I used them for croquets due to the spices in the bread mix. After they're cooked I flaked up the fish with a fork and obviously removed any bone. I then mixed all the other ingredients together before adding the fish. Once it was all mix together I just pan fried them in olive oil (I like olive oil because it's healthier to eat than vegetable oil). I always act like I'm cooking for an army so this recipe made about 16 good size patties, which I had no problem getting rid of between myself, my wife and my neighbor
 I don't use alot of salt when I'm cooking so the Old Bay seasoning had just enough for me, but someone else might want to add some salt.
I'm not patting myself on the back but these things would make your tongue slap your brains out