I've read that coral banded might be good for the tank without the hawk ( no shrimp are safe with it ). I am thinking about sexy shrimp for the 13 gal- read that i should have multiples- 3 or moreCoral banded shrimp look nice and are pretty bold. But they can occasionally take out other stuff (including smaller peppermint shrimp). Otherwise skunk cleaners or fire shrimp though those are a little less out and about in my experience. Really depends on your other tank inhabitants. They also have to be big enough to not become a tasty snack for the Falco hawk.
I think I'll go for the CBS in the tank without the hawk just to be safeI think you're going to have to decide if you want the hawk or shrimp. I decided on shrimp and love my fire and cleaner.
I have kept a group of sexy shrimp in our 30g nano for about 5years. I have them with maxi mini anemones. I started with five, I am down to three at present. I like them. Easy to keep, peaceful, and as long as you have a nem, out all the time.anyone have any experience with sexy shrimp- thinking for the 13 gal