Can Betta Fish Live With Peacock Spiny Eel?
No, peacock spiny eels grow to 12-20 inches and are nocturnal predators that will eat bettas after lights out.
Why
- Peacock spiny eels reach 12-20 inches and need at least a 35-gallon tank.
- They are nocturnal predators that actively hunt small fish after dark.
- Bettas are slow-moving surface dwellers that make easy prey for a hunting eel.
- Spiny eels have a strong prey drive and will eat any fish small enough to fit in their tube-like mouths.
What could go wrong
The betta disappears overnight with no explanation until the eel is seen hunting, or the betta shows chronic stress and unexplained fin damage.
If you keep them in separate tanks
Sized for the 35 gallon minimum this pairing needs. Affiliate links — we earn a small commission if you buy through them.
AquaClear 70 Power Filter
Oversized filtration is what lets you stock two species together without water quality crashing. Rated for a tank slightly larger than the 35 gallon minimum.
Eheim Jager 200W Thermostat Heater
Holds a steady temperature inside the 76-82°F window both species need.
API Freshwater Master Test Kit
Keep ammonia, nitrite, and nitrate in check. Two-species tanks have more bioload and less margin for error than single-species setups.
Better pairings to consider
Bettas do well in species tanks or with peaceful diurnal tankmates. Peacock spiny eels do well in species tanks with other large peaceful fish.
Related compatibility questions
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