Hi everyone,

I'm new to bicolor blennys (and saltwater tanks), so this might be a silly question. However, my new blenny is bemusing me. He is adorable and full of personality, perching around the top of the tank as king of his domain. I assume it is a 'he' because of the issue I'm about to mention. He changes color, rather frequently and startlingly quickly. It's an amazing trait, and not one I was expecting. He puts on white/blue stripes, especially when gazing around the tank from his perch. I've heard about this when mating, but there's definitely no mate available in my tank. He might be trying to mate with my diamond goby. I wouldn't want to deny him his 'forbidden love', just want to make sure draping himself sexily across rocks covered in stripes is not stressful for him. He certainly looks into it.