So I have my male betta, named Morris, in a 20 gallon tank by himself. He’s been in there for about 3 months now. My friend is moving and wants to know if I’d adopt her betta. My question is do you think Morris would get stressed if I divided his 20 gallon tank? I would buy another 10 gallon, but my spouse would kill me since I already have 8 aquariums.