Are mantis shrinp aggressive towards most fish?

[Aquaboi]

Want a mantis but seen alot of videos where tey attack anything.

 

[Rutrag]

My understanding is that in the confines of an aquarium, the mantis shrimp will hunt any and all mobile organisms that are not likely to eat the mantis. You're pretty much limited to a species tank or keeping one in a sump if you want one.

 

[Aquaboi]

Yeah that sucks, i think there pretty cool but not cool enough to sacrifice my fish for one.lol