Genera
Blink and you're dead.
Any other options than other than wrasse for a final fish?
If you want something unique you could go with a few Glassy Sweepers (Pempheris Schomburgkii). Diver Tom sells collects them along with lots of other Caribbean fish and they go for $12 a piece. Peaceful nocturnal schooling fish that hangs out in darker areas. They grow to about 3-5in and eat mainly zooplankton so they won't cause harm to coral, or fish or inverts that aren't tiny (i.e. Periclimenes Pedersoni). Not the most colorful fish though, a shiny brown/copper color with a lighter underside.
A group of Sailfin Mollies (Poecilia Latipinna) would be nice too. They get to about 3-6in and vary in color greatly from green, brown, silver, white, black, marbled, orange, yellow, red, dalmation, spotted, I've even seen some with blue on them. Acclimating them to saltwater is pretty easy IME. Drop them in a 5gal bucket with a heater and airstone and drip for 6-8 hours. Fast breeders so you will have a source of natural live food. VERY easy to keep and tolerant of a bit of abusive water parameters unless you get a sick one. Eat all types of algae and a great member of a cleanup crew. They are herbivorous and males will fight over females so make sure to have a least two females for every male.
Another cool option that would be a nice addition to your tank is a pod of Bottlenose Dolphins. They eat fish and crustaceans so I would rehome everything in your tank. Bottlenoses can get to know you really well and make all sorts of noises and will perform many tricks. I saw one at my LFS once and they are a very nice grey with a white underside.