TankStocking

Betta (Siamese Fighting Fish) Tank Mates

A male betta is a territorial loner — its best "tank mates" are animals it does not read as a rival.

By the TankStocking team · methodology-driven, sourced from aquarium care references Data v2026.06 · last reviewed How we judge this →

The betta's flowing fins make it a target for nippers, and its territorial streak makes it risky with other anabantoids and brightly-coloured, similar-shaped fish. The combinations the engine clears are mostly bottom-dwellers and clean-up invertebrates that stay out of a betta's way. In anything under 10 gallons, a betta is genuinely happiest alone.

Betta (Siamese Fighting Fish) key facts

The sourced figures the engine uses to judge Betta (Siamese Fighting Fish) pairings.

Key facts — Betta (Siamese Fighting Fish) (Betta splendens)
Adult size6.5 cm
Minimum tank5 US gal
Minimum group1 (keep singly)
TemperamentTerritorial
Temperature range24–28°C
pH range6–7.5
BioloadLow
Swim levelAll levels
Beginner-friendlyYes
Sources & confidence (8 species)

These back the Betta (Siamese Fighting Fish) figures and the recommended tank mates above. Each figure is read from the TankStocking species database (v2026.06); below is the care reference behind it and how confident we are in that data. Confidence reflects the source quality, not whether any pairing is safe. Full source list and the welfare model are on the methodology page.

  • Betta (Siamese Fighting Fish) Betta splendens — Seriously Fish (seriouslyfish.com/species/betta-splendens) high confidence
  • Amano Shrimp Caridina multidentata — Aquarium Co-Op amano shrimp care; Aquadiction high confidence
  • Bamboo Shrimp (Wood/Fan Shrimp) Atyopsis moluccensis — Aquariadise (aquariadise.com/caresheet-bamboo-shrimp-atyopsis-moluccensis) high confidence
  • Ghost Shrimp (Glass/Grass Shrimp) Palaemonetes paludosus — The Shrimp Farm (theshrimpfarm.com/posts/shrimp-caresheet-ghost-shrimp-palaemonetes-sp) medium confidence
  • Mystery Snail Pomacea bridgesii — Aquarium Breeder; Aquatic Arts mystery snail guides high confidence
  • Assassin Snail Clea helena (Anentome helena) — The Shrimp Farm (theshrimpfarm.com/posts/assassin-snail-care) high confidence
  • Cherry Shrimp Neocaridina davidi — Aquarium Co-Op cherry shrimp care; The Shrimp Farm high confidence
  • Nerite Snail Neritina/Vittina spp. — Aquarium Co-Op nerite snail care; Aquatic Arts high confidence
Tank & group guidance: Keep one male betta only. A community betta needs at least a 10-gallon, well-planted tank with broken sightlines so tankmates can stay out of its patrolled zone — 5 gallons is a betta-only setup. The planner below is pre-set to 5 gallons — add your real list to test it.

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      Verdict

      Top Betta (Siamese Fighting Fish) tank mates

      A ranked shortlist: the species the engine clears with Betta (Siamese Fighting Fish) and that suit its size and temperament best — tap any to load the exact pairing in the planner.

      Amano ShrimpBamboo Shrimp (Wood/Fan Shrimp)Ghost Shrimp (Glass/Grass Shrimp)Mystery SnailAssassin SnailCherry ShrimpNerite Snail
      Top Betta (Siamese Fighting Fish) tank mates — engine-cleared, ranked by size & temperament fit
      SpeciesAdult sizeTemp rangeMin groupSwim levelWhy it works
      Amano Shrimp 5 cm 18–27°C 3+ (pair/group) All levels Peaceful temperament, similar adult size, not a fin-nipper
      Bamboo Shrimp (Wood/Fan Shrimp) 10 cm 20–27°C 1 All levels Peaceful temperament, similar adult size, not a fin-nipper
      Ghost Shrimp (Glass/Grass Shrimp) 4 cm 18–28°C 1 Bottom Peaceful temperament, similar adult size, not a fin-nipper
      Mystery Snail 5 cm 20–28°C 1 All levels Peaceful temperament, similar adult size, not a fin-nipper
      Assassin Snail 2 cm 18–25°C 1 Bottom Peaceful temperament, not a fin-nipper
      Cherry Shrimp 3 cm 18–28°C 6+ (pair/group) All levels Peaceful temperament, not a fin-nipper
      Nerite Snail 2.5 cm 22–27°C 1 All levels Peaceful temperament, not a fin-nipper

      Possible with care

      These can work, but the engine flags something to watch — read the reason before you commit.

      • Banded Gourami — Territorial
      • Croaking Gourami — Territorial
      • Dwarf Gourami — Territorial
      • Honey Gourami — Territorial
      • Moonlight Gourami — Territorial
      • Peaceful Betta (Crescent Betta) — Territorial
      • Pearl Gourami — Territorial
      • Sparkling (Pygmy) Gourami — Territorial
      • Three-spot (Blue/Opaline/Gold) Gourami — Territorial
      • Checker Barb — Territorial
      • Cherry Barb — Territorial
      • Five-banded Barb — Territorial
      • Gold Barb — Territorial
      • Bolivian Ram — Territorial
      • Cockatoo Dwarf Cichlid (Apisto Cacatuoides) — Territorial
      • Convict Cichlid — Aggression, Territorial

      Best avoided

      A hard welfare check fires for each of these — don't mix them with Betta (Siamese Fighting Fish).

      • Chocolate Gourami — Territorial, Species-only fish
      • Kissing Gourami — Predation risk, Territorial
      • Licorice Gourami — Territorial, Species-only fish
      • Paradise Fish — Aggression, Territorial, Fin-nipping
      • Snakeskin Gourami — Predation risk, Territorial
      • Bala Shark — Predation risk, Territorial
      • Denison Barb (Roseline Shark) — Territorial, Fin-nipping
      • Odessa Barb — Territorial, Fin-nipping
      • Rosy Barb — Temperature clash, Territorial, Fin-nipping
      • Tiger Barb — Territorial, Fin-nipping
      • Tinfoil Barb — Predation risk, Territorial
      • Discus — Temperature clash, Territorial
      • Electric Blue Acara — Predation risk, Territorial
      • Firemouth Cichlid — Predation risk, Territorial

      Betta (Siamese Fighting Fish) community ideas

      Each build is scored by the same engine as the planner — tap one to load it.

      Betta + clean-up crew

      ✓ Good starter plan

      1× Betta (Siamese Fighting Fish), 1× Nerite Snail, 3× Amano Shrimp

      The classic low-conflict betta setup: a single male with algae-grazing invertebrates it ignores.

      Load this build in the planner ↑

      Planted betta community

      ! Worth a closer look

      1× Betta (Siamese Fighting Fish), 6× Kuhli Loach

      Kuhli loaches live on the bottom and rarely cross the betta's territory — a calmer community pairing in 10g+.

      Load this build in the planner ↑

      Common questions

      What fish can live with a betta?

      The safest companions are non-nipping bottom-dwellers and invertebrates — kuhli loaches, corydoras (in a big enough tank), snails and shrimp. Avoid fin-nippers (tiger barbs), other anabantoids (gouramis, paradise fish), and brightly-coloured fish a betta may mistake for a rival.

      Can a betta live alone?

      Yes — a betta does not need tankmates and is often happiest in a heated, filtered, planted tank of its own. Tankmates are an option for larger tanks, not a requirement.

      Can two bettas live together?

      No. Male bettas fight, often to the death, so the planner blocks any plan with more than one. Even females (a "sorority") are an advanced, risky setup, not a beginner one.

      More on Betta (Siamese Fighting Fish)

      Related guides on TankStocking — each scored by the same welfare engine as the planner.

      Can Betta (Siamese Fighting Fish) live with…?

      Betta (Siamese Fighting Fish) stocking by tank size

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      Compatibility is a planning estimate: individual temperament, tank layout, and group sizes all matter. Cycle the tank, add fish gradually, and watch how they behave. See the methodology or browse the full freshwater fish list.