Hawkfishes have no swim bladder so they won't hang out in the water column. As far as eating your crusties go, the longnose is supposed to be a little better than some of the others due to its smaller mouth, but don't take my word on that. I expect it would still be able to eat hermit crabs.
How about a wrasse, either lined or fairy? And there are always clownfishes.
__________________
-Quinn
Man, n. ...His chief occupation is extermination of other animals and his own species, which, however, multiplies with such insistent rapidity as to infest the whole habitable earth, and Canada. - A. Bierce, Devil's Dictionary, 1906
|