Shrimp

A figure of a shrimp.The reason why I made this 3D object was to give it as a gift to a friend. Working on the segments was the hardest, but nonetheless a new type of practice for me.

If you want to 3D print the shrimp to use it as aquarium decoration, then nylon will be a great option, while some people claim that PLA is safe to use in aquariums, it decays under water, leaving a residue that may not make a water tank completely unhabitable, however low quality PLA can contain harmful chemicals which threaten fishs' wellbeing, but it's **the PLA's paint** used to dye the filament what will land the killing blow.
Using ABS isn't also a good idea due to the fumes produced during its print, and also due to the fact that its **a derivative of crude oil** (it seems that using acetone will make your ABS pieces water proof and smooth but I don't have enough knowledge on it to encourage it). Therefore nylon is your best bet for a long-lasting aquarium decoration.

If you want to proceed