Hello, most of the fish will change color or have black spots when they are exposed to external stimuli. Such as fights, being attacked, new strange fish of the opposite sex, new water. Lili Mannosaurus these climbing perch show more obvious,

Your fish was attacked by Mannosaurus and scared.

Man dragons are highly aggressive, but it depends on the personality of the fish. I've had man dragons before that were oblivious to peacocks, and specialized in hitting their own kind, the pearl marmot. Yours is obviously not suitable for mixed breeding. I suggest you eliminate the Mannosaurus and replace it with a Pearl Vest, which has a gentler personality and can **** around with the Lili.

Lili's whiskers can still grow, as long as they are no longer attacked.