However, a larger tank is always better, as they are active fish that can grow to be 6-8 inches long. Aim for a 55-gallon tank or even larger if possible.
Here are some additional factors to consider when choosing a tank size for a red-tailed shark:
* Tank mates: If you plan to keep other fish with your red-tailed shark, you'll need a larger tank to accommodate all of them.
* Decorations: Red-tailed sharks prefer a lot of hiding spaces, so you'll need to include caves, rocks, and plants in your tank. This takes up more space.
* Filtration: A larger tank requires a more powerful filter to keep the water clean.
By providing your red-tailed shark with a spacious tank, you'll help it thrive and live a long and happy life.