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. 2 fish across 2 species in 150L. Shared temperature 22–28°C. Stocking: understocked (load index 38 vs ref 150).
Your stock
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.
One or more species profiles are only partially verified or need verification — treat numbers as planning guidance, not guarantees.
Pair compatibility for any two species · Fish library
Warnings
- Swordtail does best in groups of 3+; you have 1.
Positives
- WaterTemperature ranges overlap comfortably (22–28°C).
- WaterpH requirements overlap reasonably across the group.
Water overlap
What every fish can share at the same time
Shared temperature: 22–28°C
Shared pH: 7.0–8.0
Shared temperature range for all species: 22–28°C.
Shared pH window: 7.0–8.0.
Stocking pressure
understocked
Load index 38 vs conservative reference 150 for 150L (adult cm × quantity × bioload weight × territory factor).
Swim-zone distribution
Fish-weighted zone use — top 0.5, middle 1.5, bottom 0.0 (relative biomass per level).
Fix this setup
Grouped by scenario — work through each block in order
Schooling & group sizes
- 1.Add more Swordtail to reach at least 3 individuals, or remove the species.
Beginner difficulty
moderate
- Includes intermediate species — stable parameters matter.
Schooling / group size
- Swordtail 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.