i think its a male filamented flasher wrasse. i don't know the latin name, thought Theyre fun to have, around mating season they should start to change color and get brighter. Enjoy!
its a 75gallon (total water volume is 110 gallons)
with several hermits
several snails
5 peppermint shrimp
1 coral banded shrimp
a BTA
a feather duster
and i just squeezed in a yellow clown goby the other day