Have owned a Dragon Goby since beginning of Dec.2010. Got a second one last week. First one is almost 8" and never looked any colors other than dark shiny gold and black striped. New one is almost 5" and is very very pinkish-grey and black striped. From what I've learned about fish, the more colorful ones are usually males-? I put the little 'guy' in a tank right along side 'her' tank, about 2" apart. When they both saw eachother, they hid for hours. After a day, they went back and forth staring at eachother. By the end of the third night, they both kept 'pacing' and laying along side the glass from eachother. I figured they either really hate or like eachother. So I put them together. Would you like to know what happened?