Koden, I dont agree with the "ALL pygmy angel will nip" there are some who will never do, the point is that we dont really have a way to know who will and who wont.
I dont also agree with the "but not to eat tissue and polyps" on some occasions I have seen pygmys demolish corals or going after clams mantles like if it was food.
The bottom line is that if you put a pymy in a reef tank is like playing a roullette , but some species have better chances of "winning" , FME C.multicolor or C.argi, while other species have better chances of "losing" like C.flavissima .
Back to the topic , if you have a swimming space in that 65G, I'd try a fairy wrasse , othewise, somebody already said Marine Betta is a show fish , especially when it get used to the tank and start swimming outside begging for food.