I have a 30 gallon aquarium with a harem of bettas (3 females and a male), an algae eater and a school of 10 neon tetras. Today I noticed my male Betta acting weird. Is this pop eye, or did he get a beating from the girls? Will he be fine? They've been getting along just fine for the past 3 months. However, two days ago I added a new female, after the previous one passed away.