Wow I didn't realize they got that big. Never really thought of the feeding thing either. Kind of rules out bamboo shrimp then too. Micro crabs always looked cool but I have never had them. Shrimp wise that leaves all the colors of neo or cardinia shrimp. I think even dwarf crayfish are a yes and no thing in a 5.Feohw said:I wouldn't do vampires/vipers in a 5 gallon. Mine is somewhere between 5 and 6 inches at the moment. They also need an established, larger tank for enough food to be in the water column. How about ThaI micro crabs?