Can anyone give me any advice please?
I've had a shoal of 4 female Betta in my 100 liter tank for a year or so. Over the last few weeks there has been much fighting but no injuries. Had no idea why.
Tonight i watched a bubble nest being made then mating beneath it. I now know why the war

One of the "girls" must be a boy. He is now tending his nest and attacking anything he considers a threat.
Unfortunately he considers everything else in the tank a threat! There are 3 female Betta, 4 panda cory, 3 Platy, 2 striata loach and a bristlenose plec that are now getting attacked if they come out of hiding.
HELP!
Any thoughts, questions or advice welcomed!
Bis