Isopods are basically a fancy name for rollie polys, pillbugs, or woodlice. They are small invertebrates, with most species measuring from 1/8″-1″ or so.
There are thousands of species worldwide, with several dozen being cultivated in captivity. Technically, isopods are a terrestrial type of crustacean – they’re more closely related to shrimp than insects!
Isopods live in a wide variety of habitats (some even swim, or live in saltwater), but the ones we’re interested in primarily live on and in the soil in tropical or subtropical habitats.
Once introduced into the substrate and given time to establish, they play several important roles to help keep the habitat fresh and clean:
With all of the benefits, there really isn’t a reason to NOT add isopods in your terrariums.