What kinds of fish can you put in a 2.5 gallon tank?

* Betta fish: Bettas are small, colorful fish that are popular for nano tanks. They are relatively hardy and can tolerate a wide range of water conditions.

* Dwarf gouramis: Dwarf gouramis are another popular choice for nano tanks. They are peaceful fish that come in a variety of colors.

* Honey gouramis: Honey gouramis are a smaller species of gourami that are also suitable for nano tanks. They are peaceful fish with beautiful yellow and orange coloration.

* Zebra danios: Zebra danios are small, active fish that are perfect for adding some life to a nano tank. They are hardy fish that come in a variety of colors.

* Neon tetras: Neon tetras are small, colorful fish that are a popular choice for nano tanks. They are peaceful fish that come in a variety of colors.

* Cardinal tetras: Cardinal tetras are a slightly larger species of tetra that are also suitable for nano tanks. They are peaceful fish with beautiful red and blue coloration.

* Rummy nose tetras: Rummy nose tetras are a small, colorful fish that are perfect for adding some life to a nano tank. They are peaceful fish with a distinctive red nose.

* Harlequin rasboras: Harlequin rasboras are small, peaceful fish that are a popular choice for nano tanks. They come in a variety of colors, including red, green, and blue.

* Chili rasboras: Chili rasboras are a very small species of rasbora that are perfect for nano tanks. They are peaceful fish with beautiful red coloration.

* Celestial pearl danios: Celestial pearl danios are a small, peaceful fish that are a popular choice for nano tanks. They come in a variety of colors, including red, blue, and green.