What kind of fish can you put in a 2 gallon tank?

* A single betta fish is a popular choice for a 2-gallon tank. They are small, hardy fish that do not require a lot of space.

* Chili rasboras are a small, peaceful fish that are also suitable for a 2-gallon tank.

* Least killifish are another small, hardy fish that can be kept in a 2-gallon tank.

* Neon tetras are a small, schooling fish that are also suitable for a 2-gallon tank.

* White cloud mountain minnows are a small, peaceful fish that can be kept in a 2-gallon tank.

It is important to remember that even small fish need space to swim and hide, so it is important to not overcrowd your tank.