One of my favorite fish in my reef tank is my Marine betta named Stellaluna. A lot of people have mixed feelings about these fish, they are absolutely gorgeous to look at and seemed to swim almost effortlessly and glide throughout a tank. But they are technically in the grouper family so they will predate on things like small fish or shrimp which gives them the category of reef safe but with caution. I think as long as they are in a tank that doesn't have items small enough to fit in their mouth then they are totally reef safe as I have never had an issue with one messing with corals or fish or invertebrates that are too big to eat. They can be somewhat shy especially when first introduced to a tank, but once they put on a bit of size and get used to the feeding schedule I find they can be just as outgoing as any other fish. Attached are some pictures of mine, if you have one in your personal tank please share your experience with them.
