This is a fish puzzle that can be printed or laser cut. Instructions are included to put the fish together. Print without rafts and supports.
Fish can be printed in all together in one setting using the "Fish-ALL Pieces.stl". You may have to play around with the height of print in your slicing program to get the perfect fit, if not, super glue works fine!
Fish can also be printed in different parts using all the "Piece" files or a combination of HeadTail and Body files. To get the flowy and bent fins, print the Body-2mm file and two of the HeadTail-1mm file. For the HeadTail print, while the printer is cooling down (if you have a heated build-plate), begin to carefully bend the fins according to your liking (be cautious of how hot the build-plate is!). Another method is to reheat the plastic and bend.
I printed on both an Ultimaker 2 and a Makerbot Replicator 2. The bigger the size, the better the puzzle will be, otherwise you will need to play with the height of the print to find the perfect fit.