I have tried 2 in a mature 90 g and both starved. They lost legs one at a time until they simply disappeared. I will not buy another.

OK....
 

After reading a few more opinions with tank specs... (which helps)

I will be taking it back and trading it back in........ Oh well...

THX...

I guess in a 24g Nano....

maybe a brittle starfish.....

???

or are they all out?

Brittle star should be ok... You may have to target feed though. I had mine in a 29g and he was quite large.