Wine Red are hard to feed?

I've thought so myself too, and they are harder to be food trained than other shrimps in my experience. However, with the right condition and good choice of food, it is not impossible.

These shrimps were moved to this tank two weeks ago, they didn't pay any attention to introduced food in the first week, but slowly they get to know what it is and how good it tastes.... then this happen.

The food in the video is the MK-Breed Red Diamond, see this blog for more details.