Originally Posted by melosu58
the tank is too new to add that big of a clean up crew. As stated above one half of that or even smaller would suffice. Nice little sand crabs. I wonder if they would bother the nassarius snails. Just wondering.
So about one third to a half would be good? And heres the info I got on the Sand sifter crabs from Saltwaterfish.com.
And I quote "The Sand Sifting Crab is a small round-bodied gray crab with small digging appendages, but no true claws. These little crabs bury themselves into the sand. When feeding they'll leave their forebody out of the sand, using two small "scoops" to catch food. These crabs are peaceful and can be kept in groups. The Sand Sifting Crab will not eat any beneficial creatures in the sand bed; they are filter feeders. They are also a great feeder food for larger fish.
Crabs belong to the Class Crustacea and Order Decapoda, which is characterized by two pair of antennae, three body parts, and five pairs of legs. The head of a Crab is connected to the thorax and covered by a shell called carapace. They have a smaller abdomen and tail compared to Shrimp and they keep this tucked beneath the carapace. The first pair of their legs are usually developed claws which they use to gather food, use as protection, and to move objects. In order for Crabs to grow they need to shed their exoskeleton, a process called "molting", which allows them to remove their restricting shell and begin a new one. Often times in the home aquarium Crabs will leave this translucent shell in full view so it can serve as a distraction while the Crab finds a hiding place and allows its new shell to harden.