Mixing Shrimp

[ClownSchool]

I recently added a coral banded shrimp and two cleaner shrimp to a tank that already has three peppermint shrimp in a 70 gallon display.
Research suggests coral banded shrimp are too aggressive to mix with other breeds, but I’ve noticed the cleans are ganging up, sticking together, and keeping the coral banded shrimp in hiding.
Is mixing shrimp a hard, fast rule, or is it more of a case by case thing? Is tank size a factor?
Just wondering if it will become an evolving issue with my other shrimp?

 

[Subsea]

No hard and fast rules. However, I suspect the peppermint shrimp will suffer to coral banded shrimp aggression.

 

[56longroof]

Eventually the coral banded will kill off the other shrimp. The one in my tank was a model citizen for over a year. Then it killed several peppermint and 3 or 4 cleaner shrimp. I wouldn't risk it.

 

[ClownSchool]

Man, I know how to pick’em! lol

My last purchase was a beautiful, orange pistol shrimp with blue claws and a blue bullseye on each side that my LFS sold me with a watchman goby.
It was marked ‘exotic pistol’.
I bought it with about $75 of additional cuc.
Only after putting everything in the tank did I realized it was acting different by aggressively driving off the goby.
I researched it to find it was a Michaels Pistol.
It was a complete MONSTER! It destroyed my entire cuc, drove the goby to jump the tank, and I had to pull the entire aquascape to get it out.
Before returning it, we named it Lord Voldemort.