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. 2 fish across 2 species in 160L. Shared temperature 24–28°C. Stocking: overstocked (load index 397 vs ref 160). 1 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 397 vs conservative reference 160 for 160L (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. At least one species has ID or trade-name ambiguity on file — plan for a typical trade example, not every shop label. Elevated risk verdict — we bias toward safety; your reading of specialist sources still matters.
Pair compatibility for any two species · Fish library
Critical problems
- Red-tailed catfish needs about 2000L minimum for adult size (~120cm) and normal swimming space — your 160L tank is below that. Shop size is not adult size.
- Common Pleco needs about 600L minimum for adult size (~60cm) and normal swimming space — your 160L tank is below that. Shop size is not adult size.
- Red-tailed catfish + Common Pleco: Red-tailed catfish + Common Pleco: Tank may be too small. Red-tailed catfish and Common Pleco together need at least 2000 litres. Your tank is 160 litres. Real tanks add variables Fishori cannot model; treat this as a high-risk read, not certainty.
Warnings
- Multiple bottom-oriented territorial species (Red-tailed catfish, Common Pleco) in 160L — expect turf fights unless the footprint is very long with many territories.
Water overlap
What every fish can share at the same time
Shared temperature: 24–28°C
Shared pH: 6.5–7.5
Shared temperature range for all species: 24–28°C.
Shared pH window: 6.5–7.5.
Stocking pressure
overstocked
Load index 397 vs conservative reference 160 for 160L (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 0.5, bottom 1.5 (relative biomass per level).
Compatibility summary
Species pairing: avoid
critical· other- Red-tailed catfish + Common Pleco: Red-tailed catfish + Common Pleco: Tank may be too small. Red-tailed catfish and Common Pleco together need at least 2000 litres. Your tank is 160 litres. Real tanks add variables Fishori cannot model; treat this as a high-risk read, not certainty.
Bottom territory overlap
warning· aggression- Red-tailed catfish + Common Pleco: overlapping territory claims on the substrate.
Pairs checked: 1 · RISKY pair flags: 1 · CAUTION: 0
Fix this setup
Grouped by scenario — work through each block in order
Volume & minimum tank
- 1.Increase tank size to at least 2000L, or remove Red-tailed catfish from this stocking plan.
- 2.Remove the common pleco or move to 600L+ with heavy filtration — or swap for a bristlenose pleco (~15cm adult) if you want a pleco in a smaller tank.
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
- Consider bristlenose pleco instead of common pleco for tanks under ~200L.
- 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.
Beginner difficulty
advanced
- Includes advanced-care species.
- Serious compatibility or tank-size issues — not a beginner layout until resolved.
- Aggressive species require confident husbandry.
Behaviour & stress
Bottom territory focus: Red-tailed catfish, Common Pleco.
Fish behaviour varies. Fishori gives conservative planning guidance based on adult size, temperament, tank size and common aquarium care sources.