When I bought Shiny his 2.5 gallon tank, I was in Petsmart and I had it in my basket with a bunch of new fake plants and basically all the stuff for starting a new tank. So the guy who worked there in the fish section asked me if I'd be buying any live fish, and I said no. So he looked at all my stuff and said, "You're setting up a new tank?" And I said that I have a betta and I'm just getting him a bigger tank and more plants. So he was like, "Oh, nice" and then he says "you know you can put more than one together, right?" So I gave him the benefit of the doubt and I assumed he meant females in a much larger tank. So I said yes, I knew that. And then he said, "like a male and three females. Like that." So I was like, "Um..." because NO not like that.
And that's not even the weirdest thing- he then tells me to go to Lowe's and they sell this tropical plant that's kind of like corn and you put it over the top of the tank and they love to eat it.
I don't like confrontation so I didn't say anything, but that's the weirdest betta advice I've heard yet. Betta's don't and shouldn't eat veggies. I doubt they'd enjoy some weird plant that's kind of like corn.