I also keep sexy shrimp. I have four in one tank and three in another. 28 gallon tank and 45 gallon tank respectively. As for other inhabitants of the tanks, I have clown fish, fire fish, Yasha gobies, peppermint shrimp and some hermit crabs. My sexy shrimp eat along with the other inhabitants. I do not feed them anything special. They are hosted by some bubble tip anemones, some Maxi carpets, Rock flower anemones and everything else in the aquarium. I find them everywhere at various times. They do not stick with any one particular species. They are probably my favorite inhabitants. Good luck with yours.