Shrimp

1. Blood shrimp [Fire shrimp]
- omnivore
- reef compatible

This shrimp is well-known for its deep red color, so the name "Blood Shrimp" is quite appropriate.  The white antennae and a few spots here and there make them look even better.  I have also heard them called "Scarlet Cleaner Shrimp," which confirms that they are indeed, cleaners. However, in my experience, many of these have not been quite as eager as the Skunk Cleaners when it comes to doing their job.   In their natural settings, Blood Shrimp are often found in living male/female pairs.  But, I haven't had any problems keeping just one in an aquarium.  I doubt if it's possible for a shrimp to feel lonely (I hope not). Conversely, if you want two or more, you shouldn't have any trouble, either.  They get along fine in groups of any numbers.

2. Coral banded shrimp
- carnivore
- reef compatible

  Also commonly called Coral Banded Shrimp, these are bigger cleaners that are aptly named for the red, white, and black bands that cover their bodies.  However, I have to say that I personally have never even once witnessed one cleaning a fish in an aquarium, and have only read about this and seen it in underwater photos. They can get considerably larger than the other cleaners, too, and I think they might eat a small enough fish rather than clean it if given the chance. 
 
3. Common Marble shrimp
- carnivore
- reef compatible

 


4. Dancing shrimp [Camel shrimp]
- omnivore
- reef compatible with caution

 
  is a non-cleaner, meaning that it is nothing more than a tasty meal for many bigger fishes. And, unlike the other shrimps I've covered, these can be a danger in a reef aquarium, as they are well-known for their bad habit of occasionally snacking on various soft coral polyps and mushroom anemones.

5. Harlequin shrimp
- carnivore
- reef compatible  

The Harlequin Shrimp is without a doubt the oddest looking shrimp you'll come across.  It's difficult to even peg it as a shrimp at all due to its flamboyant appearance. It's a real shame, though, as they are also the most difficult shrimp to maintain.  

  source: http://www.wetwebmedia.com/