thinking about getting fiddler crabs

[slthoeny]

My daughter really wants a crab. But I am having trouble finding good solid information on them. I know they need access to "land" as well as water. I have read conflicting reports if they are freswater or brackish. As well as if they can go with fish. What we would like to do is set up a 10 gallon for them. I have a tower that they can climb to have access to a dry area. I am going to make a platform from a plasic tray for them. It will be over half the size of the tank footprint. Allowing room at the end for the filter. I thought I would fill the tray with sand for them. I was planning on leaving the water level a little low so they cannot climb out, plus have it covered very well. So even though it is a 10 gallon it will probably only have 8 gallons of water. Does this set up sound good? What kind of water do they really need? Can I add fish with them? What and how do I feed them? Can I get more than one? And anything else you think I need to know.

Oh yeah, would one of those blue crayfish be better?

Thanks for the help. Want to do this right.

[theotheragentm]

10 gallons is too small for most crayfish, so scratch that idea unless you want a dwarf species, which is sometimes hard to find. Fiddler crabs should be brackish, but I've heard of them acclimated to freshwater. They may have a shorter lifespan in freshwater though. There are other forums where I've skimmed some material on people keeping crabs. Try Aquarium Advice.