Grease 375.
Try this little trick to find when the fish is ready done cooking and ready to come out. Take a knife with a blade about 8" long, poke it into the fish while cooking, lift it out of the grease and if it holds onto the knife blade and lifts clear of the grease, it's done. If it fall's off the knife blade when lifted it needs to cook more. This is a trick a old man taught me when I was a kid and we had fish Fry's on the creek bank. and I have used it for years and it hasn't failed me yet.