Is it Cooked? - A Quick Test

Look: The flesh changes colour as the fish cooks. For a fillet, look at the side of the fish to see if it is beginning to turn from translucent to opaque.

Touch: The flesh strengthens when warmed. Perfection is indicated by a press that just gives.

Test: For a whole fish, insert a small knife or skewer into the thickest part. If it slides easily to the bone, the fish is cooked.