How To Draw A Fish Learn how to draw a cute and cartoon fish. Fish drawing is fun and easy. Learn how to draw a fish step by step. Fish Pictures: Step 1: Draw the outline of a fish. Step 2: Add lower fins to the body. Step 3: Add upper fin and tail to the fish. Step 4: Add details to the fins and body. Step 5: Draw a cute eye and air bubbles to complete a cartoon fish.