I got 5 of these about 6 weeks ago. Other than being quite 'jumpy' nervous fish they have been fine. Since getting them, 2 have gained colour, 2 haven't changed and 1 has lost all colour completely. Is this a really bad sign? Am I about to lose this fish? Whats the best solution? I have tried different types of food apart from spirulina (LFS doesn't sell it), but I don't think it's down to that since others have gained colour. Nothing has been done to stress the fish. If anything, I have recently added more plants which should help give them shelter..? Please help, other than worrying about losing it, he looks really crap! 
