Since doing some reading awhile back I've been interested in Acro crabs. Apparently they can form a pretty solid mutualistic relationship. I've unfortunately lost the link but there was an extensive study discussing how Acro crabs help to keep the coral healthy and growing optimally -- Not only by cleaning detritus which settles on the coral itself, but defending against predators and vermetid snails.
The efficacy of the crab in an aquarium setting remain to be studied, but several of the prominent SPS guru's at RC and other places keep and enjoy having these acro crabs.
The efficacy of the crab in an aquarium setting remain to be studied, but several of the prominent SPS guru's at RC and other places keep and enjoy having these acro crabs.