Cucumber

[newone]

:thinking: I would like to get a yellow cucumber. But will one be ok in a 15 GL reef tank? And do they live in the sand or on the rocks. Are they reef safe animal?

 

[dburr]

The colorful ones are the type that will kill your fish if stressed. I encourare you to stay away from them because of that and because your tank is to small for them to thrive. They pull stuff from the sand(most of them) and IMO you wont have enough sand to live long term.
HTH, Dan