Can a male betta go with peacock eel in 20 gallon tank?

It is not recommended to keep a male betta with a peacock eel in a 20-gallon tank.

Reasons why:

-Temperament: Peacock eels are known to be aggressive predators, while male bettas are territorial and can be aggressive toward other fish. Keeping them together could lead to constant fighting and stress, which can shorten the lifespan of both fish.

- Size difference: Peacock eels can grow up to 10 inches long, while male bettas typically reach a maximum size of 2-3 inches. The size difference between these two species can make the betta a potential prey item for the eel.

- Habitat preferences: Peacock eels prefer a sandy substrate and plenty of hiding places, while male bettas prefer a planted aquarium with a smooth substrate. Creating an environment that suits the needs of both fish can be challenging in a 20-gallon tank.

If you want to keep a male betta, it's best to provide him with a separate, species-only aquarium where he can thrive without the risk of aggression or predation from other fish.