Check if your fish will actually get along.
TankFlare checks tank size, cycle status, water readings, filter flow, bioload, and fish compatibility with a trained risk model plus conservative aquarium rules before you buy.
45 setup signals. Plain-English reasons. 496 species profiles.
Get a risk level, main reasons, safer setup suggestions, and wanted-fish impact using species data and tank conditions.
Cycle-aware tools
Use the checker to factor in cycling status, ammonia, nitrite, and other stability signals before adding fish.
AI-assisted risk scoring
A trained model scores 45 setup and compatibility signals, then TankFlare explains the result in beginner-friendly language.
Setup support
Browse 161 aquatic plant profiles by placement, light, CO2 needs, growth rate, and beginner difficulty.
Explore plantsAquarium blogs
Read beginner-friendly care guides covering setup, diet, behavior, water parameters, and tankmate notes across many freshwater species.
Aquarium logbook
Track water tests, water changes, feeding, dosing, maintenance, livestock notes, and tank observations over time.
Start logging496 species profiles
Browse tank size, adult size, schooling minimums, water ranges, temperament, diet, and care notes across the freshwater database.
Beginner-safe guidance
The goal is not maximum stocking. The goal is a calmer, safer tank that has room for mistakes.
Embeddable checker
Run an aquarium blog or club site? Add TankFlare's free stocking checker with a copy-paste iframe and attribution link.
Get embed codeUse the checker when you have a stocking idea.
Enter gallons, cycle status, plants, decor, water readings, and fish plans. TankFlare gives an AI-assisted report with risk level, reasons, wanted-fish impact, and safer setup suggestions.
Check my fish planRead the guides before you buy.
The blog library explains cycling, water changes, disease prevention, stocking, feeding, and common beginner mistakes. Species profiles add quick fish-by-fish facts when a guide mentions a specific animal.