Skunk shrimp whiskers

[kdogg85]

I recently got 4 skunk cleaner shrimp for my 75g fowlr tank. All but one have long whiskers or antennae(don't know the proper term for them). The one has whiskers about half as long as the others. They don't fight and the only other inhabitants at this point are 4 mex turbos, 2 ceriths, 1 asterea, and 3 nassarious snails. Is this normal because I noticed a shedded shell on the sand and removed it, but didn't think anything about it. They all eat very well, feed a combo of cubed shrimp and flakes once a day in very small portions. The water parameters are 8.2 ph, 0 ammonia, 0 nitrite, 10 nitrate, 450 calc, 10 dkh

[melosu58]

I personally dont think it means anything. When it molts next it should start growing like the others.