Step one:
First draw a curved line, a bit like a fishhook.
Step 2:
Then draw an arc to connect them.
Step 3:
On top, draw an oval-shaped tail.
Step 4:
Then draw triangular fins on the left and right sides, and a pointed oval on the back.
Step 5:
Add two more eyes and a smiley face to it.
Step Six:
And use arcs to draw the beard and add texture to the tail.
Step 7:
Finally, apply a nice color and the catfish is ready.