I was wondering how long it takes for wood shrimp to get to there full size.
Mine is still about 3.5 cm long and has not noticeably grown.
I got it about a month and a half ago.
They definitely grow much slower than some other shrimp, but you should have noticed some growth by now. Is it out there filtering the water all day? That's what it should be doing. If not, than that means it's not eating, or at least not eating as much as it should.