Hi,
I'm a Grandmother of a 6 year old boy.
"We" have a gallon "tank" with a male and a female Betta. There is a heater, but, no filter. :fish2:
"Blue" tends to nip a lot:facepalm: at "Red's" :fish1:fins. There is a place for her to hide. :hide:
My grandson does not "play" with the fish, so...