Measure the inner walls.
If you enter a volume, only species whose catalog minimum fits that tank are listed.
Add at least one fish to see recommended water volume and parameters.
The community is stored in the page URL — bookmark it or share the link.
Indicative tool: compatibility ratings and text parameters are simplified. Headcount increases the modeled minimum sublinearly (not a plain minimum × count) — still verify schools, pairs, and large species with species-specific guides.