How many tropical fish can i keep in a 2 feet fish tank?

The number of tropical fish that can be kept in a 2 feet fish tank will depend on several factors, including the adult size of the fish, their activity level, and their compatibility with other fish. As a general guideline, it is recommended to keep no more than 1 inch of fish per gallon of water, so a 2 feet (24 inches) fish tank would ideally be suitable for up to 24 inches of fish.

However, this is just a rough estimate and it's important to consider the individual needs and behavior of the fish you are planning to keep. Some fish may require more space than others, or may be more aggressive and territorial, and therefore may need more space or be better suited to a larger tank. Additionally, it's important to avoid overcrowding the tank to prevent issues with water quality, disease, and stress.

In summary, it's best to research the specific species of fish you are interested in keeping and their individual needs, and consult a reputable aquarium store or expert for guidance on stocking your 2 feet fish tank.