For this craft you will need a coffee filter, scissor, aluminum foil, glue, and either washable markers and a spray bottle of water or watercolors.
First, either using watercolors or washable markers, decorate your coffee filter. If using spray bottle method just color your filter with the markers and then spray with water to let the colors bleed. Once it dries, cut it into a fish shape. You can fold the filter in half and cut to make one similar to the picture. Then glue on pieces of aluminum foil.