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 · RISKY
Tank volume is below published minima for at least one species — shop size is not adult swimming space. Review supporting points next, then re-run the check.
Primary issue: Tank volume is below published minima for at least one species — shop size is not adult swimming space. Hard conflicts on file (water, pairing, size, or bettas) — resolve red items before fine-tuning decor or food. 3 fish across 3 species in 200L. Shared temperature 23–26°C. Stocking: overstocked (load index 277 vs ref 200). 3 high-severity pairing flag(s).
Your stock
Tank volume is below published minima for at least one species — shop size is not adult swimming space. Review supporting points next, then re-run the check.
Overstocked for this volume
Load index 277 vs conservative reference 200 for 200L (adult cm × quantity × bioload weight × territory factor).
One or more species profiles are only partially verified or need verification — treat numbers as planning guidance, not guarantees. Elevated risk verdict — we bias toward safety; your reading of specialist sources still matters.
Pair compatibility for any two species · Fish library
Critical problems
- Green Terror needs about 300L minimum for adult size (~30cm) and normal swimming space — your 200L tank is below that. Shop size is not adult size.
- Oscar needs about 300L minimum for adult size (~35cm) and normal swimming space — your 200L tank is below that. Shop size is not adult size.
- Jack Dempsey + Green Terror: Jack Dempsey + Green Terror: Tank may be too small. Jack Dempsey and Green Terror together need at least 300 litres. Your tank is 200 litres. Real tanks add variables Fishori cannot model; treat this as a high-risk read, not certainty.
- Jack Dempsey + Oscar: Jack Dempsey + Oscar: Tank may be too small. Jack Dempsey and Oscar together need at least 300 litres. Your tank is 200 litres. Real tanks add variables Fishori cannot model; treat this as a high-risk read, not certainty.
- Green Terror + Oscar: Green Terror + Oscar: Tank may be too small. Green Terror and Oscar together need at least 300 litres. Your tank is 200 litres. Real tanks add variables Fishori cannot model; treat this as a high-risk read, not certainty.
Water overlap
What every fish can share at the same time
Shared temperature: 23–26°C
Shared pH: 6.5–8.0
Shared temperature range for all species: 23–26°C.
Shared pH window: 6.5–8.0.
Stocking pressure
overstocked
Load index 277 vs conservative reference 200 for 200L (adult cm × quantity × bioload weight × territory factor).
Oscar, common pleco, large cichlids, and adult clown loaches raise the index sharply — not just length of fish.
Swim-zone distribution
Fish-weighted zone use — top 0.0, middle 1.5, bottom 1.5 (relative biomass per level).
Compatibility summary
Species pairing: avoid
critical· other- Jack Dempsey + Green Terror: Jack Dempsey + Green Terror: Tank may be too small. Jack Dempsey and Green Terror together need at least 300 litres. Your tank is 200 litres. Real tanks add variables Fishori cannot model; treat this as a high-risk read, not certainty.
- Jack Dempsey + Oscar: Jack Dempsey + Oscar: Tank may be too small. Jack Dempsey and Oscar together need at least 300 litres. Your tank is 200 litres. Real tanks add variables Fishori cannot model; treat this as a high-risk read, not certainty.
- Green Terror + Oscar: Green Terror + Oscar: Tank may be too small. Green Terror and Oscar together need at least 300 litres. Your tank is 200 litres. Real tanks add variables Fishori cannot model; treat this as a high-risk read, not certainty.
Pairs checked: 3 · RISKY pair flags: 3 · CAUTION: 0
Fix this setup
Grouped by scenario — work through each block in order
Volume & minimum tank
- 1.Increase tank size to at least 300L, or remove Green Terror from this stocking plan.
- 2.Increase tank size to at least 300L, or remove Oscar from this stocking plan.
Species pairing & temperament
- 1.Clear each unsafe species pair by removing or replacing one side — do not stock while red compatibility flags remain.
Suggested swaps
- Single-biome community: e.g. soft-water South Americans together (tetras + corydoras + small gourami) — run the pair tool for every add-on.
- Species or centrepiece tank: one main species (or one compatible pair group) in a right-sized aquarium with dither fish from the same water profile — not random continent mixing.
- Large cichlid / big-fish tank: build around the Oscar (or similar) with robust tank mates of similar size — not a small tetra community.
- Where a pleco is the volume problem, consider bristlenose pleco instead of common pleco for sub-200L plans.
Beginner difficulty
advanced
- Includes intermediate species — stable parameters matter.
- Serious compatibility or tank-size issues — not a beginner layout until resolved.
- Aggressive species require confident husbandry.
Behaviour & stress
Bottom territory focus: Jack Dempsey, Green Terror, Oscar.
Fish behaviour varies. Fishori gives conservative planning guidance based on adult size, temperament, tank size and common aquarium care sources.