Yep, they will catch and kill fish eventually.
Coral banded shrimp. Regardless of color. Many people have had them with no problems, but more often than not, they seem to turn predatorial as soon as they are large enough to go after fish.
I think there's a chance a fire shrimp would kill the cleaner shrimps. If it were me, I'd pick between the fire and cleaners. But peppermint and sexy shrimp get along with everyone.