Step 1: First draw a lemon shape for the head, with a mouth at one end
Step 2: Add a circle for the eye
Step 3: Now for the body, draw a larger lemon shape around the head.
Step 4: Add a triangle on top and a zig-zag on the bottom for fins
Step 5: Finally add a triangle at the back for the tail.
How to Draw a Realistic Piranha – Step-by-Step Tutorial