Make a round rice ball with your favorite filling inside. Cut the nori seaweed into long and thin strips. Match the width to the rice balls. Cut a triangle out of one of the edges as shown in the photo.

Cut out a big circle from the cheese with a pastry tip to make an eye. Use a broad straw to cut out another circle in the eye to make a pupil (the black nori-seaweed will be seen through the cheese).

Wrap the rice balls with the nori strips, place the eye-shaped cheese on top! It will look cute if you decide to add scales, but I made it easy and simple this time.

They will look like this in a bento box.

Another variation decorated the carps on a bed of rice in the bento box.