Charles & Linda Raabe
Island, The Philippines
2016 ALL RIGHTS RESERVED
Every one of us who has ever bought live rock or sand has at
time or another stood in front of our tanks wondering what that thing
is that just crawled out of the rocks. Usually our first thought is of
concern if that "thing" will eat our fish or corals.
Thankfully most of what does hitch hike in with the rocks
harmless and add to the diversity of life within our aquariums. Yet
there are some creatures that just do not belong in an enclosed system
and can become a problem. Since live rock can and does provide homes
for multitudes of various life forms, knowing each species at a glance
is far beyond most of us, of course one must get a correct
identification in order to determine if it is considered harmless or
not. Hopefully these pages and others will help you to determine the
suitability of such finds. If you find an identification impossible to
common sense will have to suffice, if the animal in question is
obviously behaving badly, then it should be removed.
special thanks to Dr.
Ron Shimek , Leslie Harris and Susan Spark for their invaluable
help with the identifications made and to David Lee
for providing the means in which to provide better photo quality. Your
generosity will be greatly appreciated for many years to come.
most commonly found shrimp species within live
rock are the mantis and pistol types. I would only consider the mantis
to be non-reef safe. Other types of shrimp are usually carried in as
commensals of corals species or hiding within the rock's crevices
posing no real threat to other livestock being kept
Thankfully there has been enough identifications done, in large part
due to Leslie Harris, that with the
multitudes of worms species it has become easier to
identify most worm family & genus groups. For identification
purposes, the head structures are most important.
With the exception of the commensal crabs I do
not introduce or allow to
remain, any of the crabs found hitch hiking in with live rock. Such
free ranging crabs including the hermits are just far too destructive
to the life within our reef aquariums.