Live compatibilityOpen
Betta
Neon Tetra
VerdictCAUTION
Temperament difference.
Aquarium decision platform · trusted by hobbyists
Not all fish play nice.
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136 profiles covering care, size, temperament, tank-size minimums and best tank mates.
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Fish Compatibility Checker & Aquarium Planning
Fishori helps you plan a healthy aquarium before you spend money at the fish shop. Enter any two freshwater fish and get an instant compatibility assessment covering temperament, adult size, predation risk, fin nipping, water temperature overlap, and pH compatibility.
Popular compatibility checks include Guppy vs Neon Tetra, Betta vs Tiger Barb, and Angelfish vs Neon Tetra. Each result explains the reasons behind the rating, not just a score.
Browse all fish profiles to see beginner-friendly species, schooling requirements, minimum tank sizes, and which fish to avoid pairing together. Use the tank builder to plan your full stocking list and check pairwise compatibility across multiple species at once.
Not sure where to start? Beginner fish guide, peaceful community fish, and schooling fish cover the most common first-tank decisions. Planning by tank size: 60L · 100L · 200L. Browse all guides or all tank sizes.