That's the product made by Gyotaku and Photoshop apps on iphone
Steps
1) take photo of the fish with white background (if the background is not white you will need to spend much time to use the eraser tool to make clean out the background)
2) Make the photo in Gyotaku, you can add text in this step
3) After done with step 2, use print screen funciton of iphone to save an image of your product (Yes, you can't save you photo in Gyotaku!!!)
4) Use photoshop to crop the photo (or else you will include the tool bars area on the image when you are doing step 3)