The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Aquamaps: aquamaps.org (1 member)
- Blog posts (0 members)
- Candidates for deletion (0 members)
- Chondrichthyan Tree of life: sharksrays.org (1 member)
- Disambiguations (0 members)
- Documentation templates (1 member)
- Fish Base: fishbase.org (1 member)
- Florida Museum of Natural History: floridamuseum.ufl.edu (1 member)
- General wiki templates (18 members)
- Hatnote templates with errors (0 members)
- IUCN Redlist: iucnredlist.org (1 member)
- Image license templates (13 members)
- Images (4 members)
- Infobox templates (13 members)
- Maintenance (5 members)
- Media (2 members)
- Navbox templates (1 member)
- Notice templates (10 members)
- Pages with script errors (22 members)
- Quote templates (2 members)
- SMLSSR Wiki (5 members)
- Stubs (0 members)
- Template documentation (56 members)
- Templates (11 members)
- Unattributed files (0 members)
- Video (0 members)