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Compatibility Report

Can Betta Live With Siamese Algae Eater?

GuideMyTank compatibility analysis for Betta and Siamese Algae Eater.

Planning verdict

caution

Conditional

Only plan this pair if every listed condition can be met, and have a separation plan if stress or aggression appears.

Data confidence
high
Assessment source
Structured data model
Data completeness
100%

Blocking risks

No automatic safety blocker was found.

Conditions and cautions

  • One species may be semi-aggressive and require planning.
  • Tank size requirements differ moderately.
  • Water flow preferences conflict.
  • Activity level or feeding speed may stress a slow, delicate, or long-finned species.

Supporting factors

  • Temperature ranges overlap well.
  • pH requirements overlap well.
  • Social requirements align.
  • No predation risk detected.
Betta profileSiamese Algae Eater profileMethodology and limitations

Why This Pair Received Its Verdict

Betta and Siamese Algae Eater receive a conditional verdict from the current structured assessment. Betta is recorded as semi-aggressive with an aggression level of 6/10; Siamese Algae Eater is recorded as peaceful with an aggression level of 2/10. The recommendation is based on the combined water, space, behavior, grouping, and predation checks below rather than on species names alone.

  • Temperature ranges overlap well.
  • pH requirements overlap well.
  • One species may be semi-aggressive and require planning.
  • Social requirements align.

Helpful Links

Use the Compatibility CheckerRead the Compatibility Disclaimer

Water Parameter Overlap

Betta has a recorded temperature range of 76–82°F and pH range of 6.5–7.5. Siamese Algae Eater is recorded at 75–79°F and pH 6.5–8. Their shared planning window is 76–79°F for temperature and 6.5–7.5 for pH. A shared aquarium must stay inside the overlap rather than merely touching each species’ outer tolerance.

Aquarium Space and Adult Size

Siamese Algae Eater sets the larger listed base aquarium requirement at 30 gallons; the other listed minimum is 5 gallons. Siamese Algae Eater is the larger adult by the recorded maximum, reaching 6 inches, compared with 3 inches. These figures are starting constraints, not a stocking-capacity calculation, because the complete group sizes and bioload still matter.

Behavior and Social Requirements

Betta is a calm species associated with the top zone and low flow. Siamese Algae Eater is active, uses the bottom zone, and has a high flow preference. Betta does not have a recorded minimum school larger than one, while siamese algae eater does not have a recorded minimum school larger than one. The aquarium must support both social structures without forcing either species into insufficient space.

Husbandry Fit

Betta is recorded as a carnivore with easy care, while Siamese Algae Eater is a herbivore with easy care. Their listed preferred tank styles are planted and planted. Feeding access, cover, open swimming room, filtration, and observation should be planned around the more demanding requirement rather than averaged between the two species.

What Would Change the Decision?

Use these pair-specific boundaries before treating the verdict as an acceptable stocking plan.

  • Do not proceed unless one stable temperature and pH range can be maintained for both Betta and Siamese Algae Eater; acclimation does not correct an incompatible long-term range.
  • Treat size, predation, and fin-damage warnings as stop conditions. Extra plants cannot reliably make an unsafe predator-to-prey or fin-target pairing safe.
  • Use broken sight lines and multiple retreats, then separate the pair if either species shows persistent chasing, hiding, clamped fins, or loss of feeding access.
  • Recalculate space using the full adult group sizes—not one specimen of each species—and reject the plan if either species must be understocked socially to fit.
  • Prepare a cycled backup or separation option before introduction; individual behavior can be less predictable than species-level records.

Aquarium Planning Checklist

  • Keep temperature within 76–79°F.
  • Keep pH within 6.5–7.5.
  • Use at least the larger 30-gallon base requirement before accounting for the complete stocking plan.
  • Betta does not have a recorded minimum school larger than one; siamese algae eater does not have a recorded minimum school larger than one.
  • Provide a separation plan and monitor feeding, stress, chasing, damaged fins, and access to preferred habitat zones.

Final Recommendation

Only plan this pair if every listed condition can be met, and have a separation plan if stress or aggression appears.

Sources and Data Provenance

These references support the underlying species records used by this assessment. They do not necessarily evaluate this exact pair together.

  • ask.ifas.ufl.educare · medium confidence
  • fishbase.secare · medium confidence
  • fishbase.secare · medium confidence
  • en.wikipedia.orgtaxonomy · medium confidence
Read the full methodology and limitations
Report quality
supported
Analysis version
2026.09.1
Species data updated
Jul 2, 2026
Review status
Structured automated assessment

Related Resources

Continue with the most relevant care and compatibility resources for Betta and Siamese Algae Eater.

  • Betta Splendens Care GuideA practical, evidence-informed guide to housing, feeding, behavior, tank mates, health, and long-term care for Betta splendens.
  • Plan These Species in Aquarium BuilderAdd livestock and validate tank size, stocking, and compatibility.
  • Amano Shrimp and Betta CompatibilityCompatibility report for Amano Shrimp and Betta.
  • Amano Shrimp and Siamese Algae Eater CompatibilityCompatibility report for Amano Shrimp and Siamese Algae Eater.
  • American Flagfish and Betta CompatibilityCompatibility report for American Flagfish and Betta.