Seahorses

[SeaHorse_Fanatic]

The change could be due to stress, change in diet, & most likely, change in scenery. The colours are often used as camouflage, so if they change their setting, then the colours will as well. Most of the time, when you buy the brightly coloured ones in th LFS, after a few weeks/months, they'll all be more or less similar in colour.