Thanks for the info, Steve.
It is very interesting to hear about dartfish vs. blennies. Even when I had an aggressive three-stripe damsel, the purple firefish was the ruler of the roost. The damsel wouldn't even think of harassing it, despite the firefish eventually stealing the damsel's preferred sleeping quarters. But if blennies aren't a good idea, are there any other "small bodied, great personality" fish you would recommend?
I have a 29 gallon tank with about 20-25 lbs of live rock and crushed coral substrate. My population consists of 2 baby ocellaris clowns, 1 six-line wrasse, and 1 purple firefish with 4 small hermit crabs, 4 astrea snails.
has assured me that another addition could be made, quoting the inches/gallon ratio based on their current (sans tail) length. However, I've read many places that it should be potential maximum growth that matters, and I'm also wary to take LFS
opinions as gospel.
In any event, if I add another fish (big if), I would like to make sure that it fits into my current tank's stratification. The clowns love the top, and the wrasse and firefish currently stick to the middle. I thought that something liking the rocks and caves toward the bottom would be the most logical.