I do like the snowflake eels, but I think one would get too big though for a 50 gallon. Plus, I think this little damsel could open a can of whup-a** on an eel

Well maybe not quite, but I don't think he'd become lunch anytime soon. I liked him for his colours when I got him, and at first he was fairly shy. Once he got a bit bigger though, he started to put the run on everything. I don't plan to get any more damsels anytime soon... or ever. I would like to have a flame angel in this tank, but I worry about these damsels harassing it too much.
Yes that crab is a monster. Its not quite baseball size, but it is about the size of a fist. She's a real pig when I give her a chunk of fish mush or a clam to dine on, the damsels get the scraps that get away. I decided it must be female because I leave four or five shells in the tank and shes in a different one almost every day

. Likes to change her outfits, she does.