The Short Answer
Bettas need 76-82F water. Axolotls need 60-68F. The temperature gap alone makes cohabitation impossible.
Why This Works Badly
Bettas are tropical fish that come from warm Southeast Asian waters. They cannot survive long-term below 72F. Axolotls cannot survive long-term above 72F. There's no temperature that works for both.
Temperature Compatibility
Bettas need 76-82F. Axolotls need 60-68F.
These temperature ranges don't overlap at all. Any compromise temperature kills one or both species over time.
How Bettas (Siamese Fighting Fish) Injures Axolotls
Bettas are aggressive territorial fighters and will nip axolotl gills and slime coat. Their long flowing fins also attract the axolotl, leading to bite injuries on the betta.
How Axolotls Injure Bettas (Siamese Fighting Fish)
Axolotls will attempt to eat the slow-moving betta. Bettas have spines that injure the axolotl's mouth.
Symptoms to Watch For
- Both species lethargic
- Refusing food
- Visible aggression at the surface
- Quick deterioration of one or both
What to Do Instead
Bettas need a 5-10 gallon heated tank of their own. Don't combine.
Frequently Asked
Can axolotls live with bettas (siamese fighting fish)?
Bettas need 76-82F water. Axolotls need 60-68F. The temperature gap alone makes cohabitation impossible.
What about temperature?
Bettas need 76-82F. Axolotls need 60-68F. These temperature ranges don't overlap at all. Any compromise temperature kills one or both species over time.
How does bettas (siamese fighting fish) hurt the axolotl?
Bettas are aggressive territorial fighters and will nip axolotl gills and slime coat. Their long flowing fins also attract the axolotl, leading to bite injuries on the betta.
Will the axolotl hurt the bettas (siamese fighting fish)?
Axolotls will attempt to eat the slow-moving betta. Bettas have spines that injure the axolotl's mouth.
What problems should I watch for?
Both species lethargic. Refusing food. Visible aggression at the surface. Quick deterioration of one or both.
What should I do instead?
Bettas need a 5-10 gallon heated tank of their own. Don't combine.