One should suffice for that size tank.
One. They fight with each other from what I hear.
One. They fight with each other from what I hear.
I have a pair in a 10 gallon QT. They'll be there for at least 10 weeks and then put in to a 40 breeder. I chose small specimens and added them together. Very peaceful and when they mate... free fish food.
I quarantine everything wet that eventually goes into my reef. Fish get 12 weeks. Rock, corals, shrimp, snails, etc. get 10 - 12 weeks.
Why, because some stages of ich can hitch a ride on rock, inverts and frag plugs. I also like to monitor the health of my new critters and it's easier to observe in a small QT and take care of pests there.
2. They are socially enforced monogamous hermaphrodites. Doesn't matter how many you start out with you end up with 2.
http://www.livescience.com/16985-cleaner-shrimp-murder-rivals.html
This really blew up overnight! lol
So, what I am getting is that they won't do any harm if kept in a pair in my tank besides possibly annoying the fish with their obsessive want to clean?
Will there be any harm in introducing a second later on down the road? I don't want my fish to be overwhelmed, especially since the first two I'm going to be getting are a pair of clowns. That, and skunks are a bit pricey at my LFS.