To get a cucumber?

[molybdenumman]

I have a 50g tank with pretty dosile fish including a flame angel, yellow tang, 2 clowns and a bicolor basslet. I have about 1 inch of argonite as my substrate. The tank has been set up for 2 years.

Are these conditions condusive to a cucumber? I have a black and a brown one available to me. Should I hold off for a tigertail or will the brown/black one be just as visually appealing?

Thanks for your help.

MoMan