Anyone have the color on there fire shrimp appear to fade? My guy has found this one nook in the tank and rarely moves now. He used to be all over the place but recently just likes his one spot. Since he has moved to this one area he appears to have faded a little. He's not that vivid red he was before this antisocial behavior. It has nothing to do with molting and nothing to do with new tank mates or a change in water parameters. He's been in this set up for a little over 7 months and this apperance just started about 2 weeks ago. Any info would be great.