Elsa
Adept
^
Thank you for asking, great question! No sir, they do not deteriorate. I have them made to stay permanent. In fact I have a few myself I use as deco and they don't change locked down. They look fantastic around the house. You can also buy and add them to your aquarium if you choose. I hope to load up the more rare ones soon that I have not caught duplicates of yet such as the Albino Frog, Jellyfish, and Nujelm Honey. In the mean time here is a pic of my little grotto at home with the fish inside just to spark some ideas. Thanks for watching!