Okay, no more fish in the tank. Just the two guppy boys (I decided on Citris and Carribean). They seem happy!

I do have two question: What do I do when one dies, but the other guppy doesn't?
and...Could I keep a little crab in there?

Thanks everyone. I will be taking that tank taken care of VERY carefully! I will also be monitering how the guppy boys are doing closely.

Thanks you so much once again everyone!-
Steph and the guppy boys (Jesse and Splinter too!)