Wall Cleaners:
Abalone (Haliotis sp.), Astraea (Astraea tecta), Bumble Bee Snail (Pusiostoma sp.), Cerith (Cerithium altratum), Chiton (Cryptochiton sp.), Cowrie (Cypraea sp.), Margarita Snail (Margarites pupillus), Nassarius (Nassarius vibex), Nerite (Nerita lineata), Paper Bubble Shell (Bulla gouldiana), Trochus (Trochus niloticus), Turbo (Turbo fluctuosa)
Rock Grazers
Astraea (Astraea tecta), Blue Leg Hermits (Clibanarius tricolor), Chiton (Cryptochiton sp.), Dwarf Blue Leg Hermits (Clibanarius tricolor), Dwarf Zebra Hermits (Calcinus laevimanus), Electric Blue Hermit Crab
(Calcinus elegans), Electric Orange Hermit Crab (Calcinus sp.), Emerald Mithrax Crab (Mithrax sculptus), Halloween Hermits (Ciliopagurus strigatus), Mexican Red leg Hermits (Clibanarius digueti), Scarlet Reef Hermits (Paguristes cadenanti), Tiger Tail (Holothuria sp.), Turbo (Turbo sp.)
Sand Sifters
Bristleworms (Amphinomidae sp.), Cerith (Cerithium altratum), Nassarius (Nassarius vibex), Sand Sifting Gobies (see www.liveaquaria.com), Sand Sifting Starfish (Astropecten polycanthus), Wrasses (see www.liveaquaria.com)
Detritus Eaters
Bristleworms (Amphinomidae sp.), Brittle Sea Star (Ophiothrix sp.), Brittle Star (Ophiura sp.), Emerald Mithrax Crab (Mithrax sculptus), Pacific Conch (Strombus sp.), Serpent Star (Ophiocoma sp.), Serpent Star (Ophioderma sp.), Serpent Star (Ophiolepsis sp.), Tiger Tail (Holothuria sp.), Tongan Fighting Conch (Strombus gibberulus)
This is a basic list of the most common cleanup crews available (inc. a few fish), there is lots more available in different countries and is by no means finite. Not all of these are suitable for every tank so research into each invert is required to confirm its suitability for each individual aquarium.
Research will also confim the suitability between each invert when placed in the aquarium together.