I have a halichoeres melanurus who has recently started fighting his reflection, extremely badly. We've had him for a little over 6 years and while he has done this before it certainly wasn't as aggressive by a long shot.
He is in a 250g with 14 other kinds of wrasse species and there is absolutely no aggression in our tank, it's actually amazing. His first time really doing this he dislocated his bottom jaw for a while and then one day it was back to normal. Fast forward 6 years to present and he is smashing his brains in from the moment he emerges from the sand until an hour before lights off. The sound of his head smashing on the glass can be heard everywhere on the first floor, it's crazy how much sand he's moving from the front to the back while machine gunning his head back and forth.
The only addition is a c.aprinus (pixie hawkfish) a month ago. While this is a 90% wrasse tank it's a peaceful environment, except chicken patty day (custom food mix). I've tried everything except isolate him in a tub with no reflections. Thank you.
He is in a 250g with 14 other kinds of wrasse species and there is absolutely no aggression in our tank, it's actually amazing. His first time really doing this he dislocated his bottom jaw for a while and then one day it was back to normal. Fast forward 6 years to present and he is smashing his brains in from the moment he emerges from the sand until an hour before lights off. The sound of his head smashing on the glass can be heard everywhere on the first floor, it's crazy how much sand he's moving from the front to the back while machine gunning his head back and forth.
The only addition is a c.aprinus (pixie hawkfish) a month ago. While this is a 90% wrasse tank it's a peaceful environment, except chicken patty day (custom food mix). I've tried everything except isolate him in a tub with no reflections. Thank you.