Here's how to cook fish:
Preheat your oven to 350
Heat up your cast iron skillet
While this is happening, season your fish with w/e spices you think will go well
Put the fat of your choice in the cast iron and place (carefully) the best looking side of your fish down in the pan
Once the flesh turns "cooked" color for about a 1/4" up the side of the fish and the fish can easily be lifted off the surface of the pan, lift it up and put the opposite side down in the pan (carefully, hot oil hurts)
Immediately place cast iron skillet into the heated oven and check every 5 minutes or so until you start to see little beads of what look kinda like milky sweat appear from in between the muscle fibers of the piece of fish on the top of the piece. It is done.
Remove cast iron skillet from oven, set aside and let fish rest for about 5 minutes before eating.
Once you get used to fish you can start cooking it a little shorter in order to enjoy all it's fishy goodness.
"You can demonstrate the purpose and limits of human digestion with a simple experiment: eat a steak with some whole corn kernels, and see what comes out the other end. It won’t be the steak."