FinsUp!;321816 said:
Dude, I'm tellin' you... meat-eating amphipods are the answer.
http://reefkeeping.com/issues/2004-09/rs/index.php
Ronald L. Shimek, Ph.D
Nonetheless, the most common amphipods found in aquaria are
either herbivores or detritivores. They tend to eat either plant or algal
material preferentially and either graze on algae or eat debris of plant or
algal origin. Generally, they don't eat much in the way of animal flesh,
although
occasionally we do get some predatory amphipods in our systems. It is
difficult to distinguish between any of these species without specific
microscopic examination, so the only way most hobbyists have of differentiating
between the two types (and keep in mind there are several hundred potential
species in each type) is to watch them feed. In our aquaria amphipods are
typically part of the cleanup crew. In addition, they are good food for whatever
fish can catch them. Altogether they are a beneficial and interesting component
of our systems' fauna.
Carnivory in amphipods is not uncommon, and occasionally
some truly carnivorous forms hitchhike into marine aquaria. In the deep sea, or
even in many shallow water areas below the photic zone, carnivorous amphipods
are either dominant members of the scavenging guild or predatory in their own
right. I even know of one species that on occasion is a man eater, being the man
it was documented eating!