I have had a couple that were very bossy over the years, but for the most part the ones I have kept are cool. Wouldn't keep them with really aggressive fish, but they are a nice fish for large semi aggressive community. Some of these guys are very owner friendly.
No I don't I only keep Marble Gobys now got rid of all my other sleeper species. Gobys change colors for a variety of reasons (tankmates,backgrounds,gravel,feeding, courtship display and more) so I couldn't tell you mine were never the same color all the time.
Thank you for your response. I was worried about them at first because they were so pale for so long. Now that they are settled in and finally colouring up, I am actually the homing them. I await to reduce my bioload in this tank since I have some new rays that are my keepers. I originally only took them because a friend was trying to decrease his bio load.
