FishTankFish compatibility checker
Can these fish live together? Pick two or more freshwater fish, shrimp or snails, and this free checker tells you, pair by pair, whether they get along, plus the temperature they all like and the smallest tank for the group.
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Verdict
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Shared temperature
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Smallest tank
Every fish is different, and a big, planted tank makes almost any mix calmer. Use this as a starting point, not a guarantee.
Quick answers
| Question | Answer |
|---|---|
| Can bettas live with guppies? | With care. Bettas often attack colorful, long-finned male guppies. Female guppies or Endlers fare better. |
| Can bettas live with neon tetras? | Yes. Good tankmates. Keep both at 76–80°F. |
| Can bettas live with corydoras? | Yes. Good tankmates. Keep both at 76–78°F. |
| Can bettas live with cherry shrimp? | With care. Some bettas hunt cherry shrimp. Lots of moss and plants help the shrimp hide. Bettas eat baby cherry shrimp. Adults usually survive with plenty of moss to hide in. |
| Can angelfish live with neon tetras? | No. Adult angelfish eat fish as small as neon tetras. |
| Can angelfish live with corydoras? | Yes. Good tankmates. Keep both at 76–78°F. |
| Can fancy goldfish live with neon tetras? | No. Goldfish need cool water and grow big and messy. Keep them with other goldfish, not tropical fish. Goldfish eat anything that fits in their mouth. |
| Can tiger barbs live with angelfish? | No. Tiger barbs nip fins, and angelfish have long fins. |
| Can dwarf gouramis live with honey gouramis? | With care. Different gouramis can squabble. Give them a planted tank of 30 gallons or more. |
| Can guppies live with platies? | Yes. Good tankmates. Keep both at 72–80°F. |
| Can mollies live with swordtails? | Yes. Good tankmates. Keep both at 72–79°F. |
| Can cherry shrimp live with neon tetras? | Yes. Good tankmates. Keep both at 72–80°F. |
| Can bristlenose plecos live with corydoras? | Yes. Good tankmates. Keep both at 72–78°F. |
| Can fancy goldfish live with mystery snails? | Yes. Good tankmates. Keep both at 68–72°F. |
How the checker decides
- Temperature: the fish need a shared range of at least 2°F. Goldfish need cool water, so they don't mix with tropical fish.
- Size and mouths: angelfish and goldfish eat fish and shrimp small enough to swallow.
- Fins: tiger barbs, serpae tetras and black skirt tetras nip long fins on bettas, guppies and angelfish.
- Temper: bettas fight with each other and with gouramis, and male dwarf gouramis fight each other.
- Shrimp: most fish over about 2.5 inches eat baby shrimp, and some eat adults.
Of the 496 different pairs of the 32 fish in the checker, 356 are good tankmates, 57 work with care and 83 don't mix. Once you have a list that works, check the numbers with the stocking calculator, or find fish for your tank with the fish finder.
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Related: Stocking calculator · Fish finder · Betta fish tankmates · Fish care sheets