no u can have as many as u can fit in your room...i just don't have a lot of space...i have 2 other bettas in my room 2...squishy and citrus i'll post citrus...she's the only one i can ever get decent pix of
Not wanting to look like a plonker ) Can you keep bettas in jars like that without filtration or heating? I think that looks really nice, my mom used to have those jars in our kitchen when I was a kid.