I was thinking about getting one pet crab for a large bowl, but I am not sure exactly what to look for... answers to a few of these questions would be helpful... 1. what are some small freshwater crabs I can get? 2. what should I feed it? 3. Are there any important things it needs in its tank? 4. Do they need to be able to get above water or are they totally aquatic? If you can help me with this I'd dearly appreciate it!! :D