Pardon the fast and sloppy work but hopefully it will illustrate the point! Gotta go see my ten year old sing while dressed up like a 50's thug at school :) 1. Go to the render room and activate 'Light through transparency' or else this effect will crash and burn. 2. The quality of your fish depend on how much time you spend on the silouette and texture maps. Since obviously these fish are as flat as a piece of paper you'll need to artificially shadow their roundness with the texture. 3. Select the partical emitter of your choice. Then, in the assembly room in the properties tray, select 'rectangular' for the shape of the particles. 4. Apply and fuss around with the elements in the Shader Room until it looks right. As you can see in the image above, I had to rotate and flip the texture maps to work for this image. 5. Have fun. Leaves on trees, forests, falling money etc. can be created quickly this way. Mark