How big can a Mysis Shrimp be?

[potatocouch]

I thought I was sure of that I am having a Mantis Shrimp ... but I could be wrong.

The guy can actually be a Mysis Shrimp.

How big can a Mysis Shrimp be?

Dark black coloured.

 

[potatocouch]

It's been almost a week but I don't hear any clicking sound.

that is why i am questioning myself whether it is indeed a mantis shrimp.

 

[Shawn O]

Can you catch it and take/post photos?