Where to Find and Catch Anorith
From Pokemon Go Wiki
Anorith are found and captured in Nest and Habitat locations.
Nests
Anorith Nests are locations that consistently spawn Anorith.
Habitats
Anorith Habitats are spawn locations where Anorith is likely to be encountered, but not guaranteed the way a Nest is.
Additional Tips and Information
Best Nests
If you know a really good nest or any of the nests above is really good, list them here: