Aro has stopped eatinf all together for nearly a week now. I did notice a scratch on its head maybe it did hit the top. May have to start some treatment
Gar is very friendly I doubt it's the gar.. Just a bad pic haha
When lights go out at night I know some things go down that I don't always see. Unless your Lei is slamming against glass and/or hitting it's fins against the décor, it may well be the gar.