When I was around 10 years old I was with my mum in the shopping mall. I'm pretty sure I was annoying her because she said if I stay quiet and leave her be she would take me to the pet shop, which used to be and still is my favourite shop in the mall. She took me there and I was looking around at the fish section and I saw a blue betta fish with red fins. I asked my mum if I could have it and she said I could. I remember that as one of the happiest days in my life. I got a 15l (3gallon) tank for one male and three betta females. I knew absolutely nothing about fish back then and neither did the employees in the pet store. I did no know that you could not keep betta fish of opposite sex together. I know what you are thinking, BUT all the fish were living perfectly fine for 6 months. No injury whats so ever. There was a dominant female but nobody was hurt. I would take the fish out, and clean the whole tank with tap water every week together with gravel. They seemed fine to me and lived in the same tank for 3 months, but then I dropped the tank (no fish inside just the glass box itself). Go another, a bigger one which leaked and then the same one as before (which I still have to this day). The male died after 6 months and the two females followed soon after. The one female was still alive and I smuggled it across the border of 3 countries when we moved, however she died soon after. After that I got a 180l tank with a bunch of guppies, mollies swords and cories. Through the last 6 years I kept lots of fish in that tank and still am to this day.
As I already said I didn't know anything about fish or fish-keeping. Absolutely nothing. I believed everything the employee at the store told me. After I started researching about fish and saw female betta fish pictures online I assumed the store employee was wrong, since the fish on the photos were colourful and the ones I had were beige. I went to many fish stores since and never saw the likes of those fish again, until recently, about 2 months ago. That is when I realized that I kept a betta sorority tank in a 3 gallon tank and did so as successfully as I could, but more importantly the fish didn't fight at all. I was in disbelieve. Thinking back, I think this only worked because the male didn't know the females were his species since they had no colours at all, but I don't understand how the female fish didn't fight. I'm assuming I got incredibly lucky, but that sparked my interest in this hobby.