Stocking plan
Plan a freshwater tank stocking
Set volume, add species with the numbers you actually plan to keep, and get a conservative verdict for the whole stocking — bioload, group size, zone crowding, and multi-species conflicts, not a single pair in isolation. Use the editor first; the planning notes below explain why a pairwise match still needs a tank-level check.
How to build a stocking
- Choose tank volume in litres — start with the footprint you own or plan to buy.
- Search and add each species. Schooling fish pre-fill at their group minimum so you do not under-count a shoal.
- Read the whole-tank verdict: pairwise conflicts, stocking pressure, water-parameter overlap, swim-zone balance, and suggested fixes when the engine has them.
What a whole-tank check covers
Pairwise "they can live together" is not enough. Six tiger barbs need room and numbers; an oscar needs adult bioload the glass can support; two GOOD pairs can still fight over the same bottom territory. The builder looks at combined load, group size, and how species interact as a set.
Guidance is conservative planning help, not a promise that every fish from every shop will behave. See methodology and limitations.
Pair check vs tank plan
Use the two-fish compatibility checker when you only need a yes/caution/no on one pairing. Come here when volume, counts, and the full community matter.