The Mini Crab is a fascinating crustacean known widely as a wonderful "alternative" pet. Also called the Fiddler Crab, Uca sp. is extremely popular thanks to its energetic antics and relative ease of care. The Mini Crab is a hardy species that does well under proper living conditions. The Mini Crab originates from the brackish, inter-tidal mud flats, lagoons, and swamps of Florida. As such, the Mini Crab requires some salt in the water in order for it to thrive. In addition, contrary to popular belief, the Mini Crab is not a fully aquatic species.
The Mini Crab is a semi-aquatic species that requires access to an area above the waterline. A "beach" or "shoreline" made with sandy substrate is ideal. The use of aragonite substrate will help maintain higher pH levels and provide a source of calcium and important trace minerals. The Mini Crab aquarium habitat should be aquascaped liberally with rocks, driftwood, and other decorations to offer hiding places and climbing areas. However, be sure to leave an open area for burrowing and digging. Good water quality is important for the health of the Mini Crab. An internal filter is a great way to provide both proper filtration and water movement for the Mini Crab habitat. The Mini Crab is a capable escape artist so a tight-fitting cover is essential.
The Mini Crab is extremely interesting to watch especially when it is actively searching for food or when the male Mini Crabs are trying to attract a mate. The male Mini Crab has a large brightly colored claw it uses to "call" or signal female Mini Crabs. The female Mini Crab has two small claws.
Though the mini crab does take a fair deal of work to maintain, they are well worth it. My kids love to watch them. They require a fair amount of space if you wish to have multiple. Their lifespan can to quite long if cared for properly. I still have one I purchased over 7 years ago!
What else could make a aquarium complete? I have my 55 gallon setup with Mini Crabs. I do not recomend them for beginners. They take a lot of time and extra care but they are well worth it.
