Here's why:
* Space: Fiddler crabs are active and need a spacious environment. A 10-gallon tank is far too small for even a single crab. They need at least a 20-gallon long tank for a single crab, and more space for multiple crabs.
* Social Needs: Fiddler crabs are social creatures and thrive in groups. Keeping just one or two in a small tank can lead to stress and aggression.
* Water Quality: Fiddler crabs require specific water conditions, including salinity, temperature, and filtration. A 10-gallon tank would be difficult to maintain the proper environment.
Instead of a 10-gallon tank, consider:
* A 20-gallon long tank for one or two crabs.
* A larger tank for multiple crabs (at least 30 gallons).
* A proper filtration system.
* A substrate that allows for burrowing.
* Plenty of hiding places.
It's important to research the needs of fiddler crabs thoroughly before getting one.