Kromnigon makes fluorescent labels called FlexiStain that stick to biotin-labelled primary antibodies.
This means that you skip the species matching headache when using multiple antibodies and your labeling is faster! I have not tried myself but they offer free trial kits so give it a try! You are welcome to leave comments on this posts to tell us if it works or not! 🙂
Note: We have not had very good experience with these dyes. Check this post instead.