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.
Shared plan · CAUTION
Group sizes are under hobby norms for at least one social species — behaviour and stress follow group size. Review supporting points next, then re-run the check.
Primary issue: Group sizes are under hobby norms for at least one social species — behaviour and stress follow group size. Reads as a general community basket — outcome depends on honest volume, peaceful choices, and filtration headroom. 4 fish across 2 species in 80L. Shared temperature 24–28°C. Stocking: balanced (load index 53 vs ref 80).
Group sizes are under hobby norms for at least one social species — behaviour and stress follow group size. Review supporting points next, then re-run the check.
Moderate confidence — typical community planning band; verify any borderline pair in the compatibility tool.
Pair compatibility for any two species · Fish library
Warnings
- Platy does best in groups of 3+; you have 1.
- pH overlap is tight — large water changes can swing chemistry outside the safe band.
Positives
- WaterTemperature ranges overlap comfortably (24–28°C).
- CommunityPeaceful community core — no aggressive species in the list.
Water overlap
What every fish can share at the same time
Shared temperature: 24–28°C
Shared pH: 7.5–8.0 (tight overlap)
Shared temperature range for all species: 24–28°C.
Shared pH window: 7.5–8.0.
Stocking pressure
balanced
Load index 53 vs conservative reference 80 for 80L (adult cm × quantity × bioload weight × territory factor).
Swim-zone distribution
Fish-weighted zone use — top 0.0, middle 4.0, bottom 0.0 (relative biomass per level).
Most biomass leans toward one swim level — shy fish may feel exposed or outcompeted at feeding time.
Fix this setup
Grouped by scenario — work through each block in order
Schooling & group sizes
- 1.Add more Platy to reach at least 3 individuals, or remove the species.
Layout & swim zones
- 1.Add structure (caves, tall plants) and consider species that use under-represented zones.
Beginner difficulty
easy
Schooling / group size
- Platy does best in groups of 3+; you have 1.
Fish behaviour varies. Fishori gives conservative planning guidance based on adult size, temperament, tank size and common aquarium care sources.