Pretty creatures but hard to keep. They would hide at the back of your rock works and stay there for the remainder of their life. Very picky eaters as well. Food needs to be available at most time or else they would start starving. They require good water parameters as well. They have short life span in a closed system since there is very little info known about them. Have one of them in my tank for 6 months now and can barely see them since they went to the back of my rock work. I check on him from time to time with a flash light and so far he's thriving.