My girls LOVE the gravel vacuum!
Every time I change the water or clean their tank my girls are all over what ever I'm doing. My girls are always so curious! First it starts with the gravel vacuum they are in a planted tank with sand so I really just gently go around and pick up random debris and food bits and they follow the tube the whole time, chasing the debris up the tube and nipping at my hand, they are well fed, so its not like they are trying to eat it. Then when I am filling the tank up with fresh water ( I do this cup by cup very slowly so I don't disturb by tedious aqua-scaping ) they are dodging all around cup playing in the current and nipping at everything. It is so cute, makes a somewhat boring process entertaining though I am scared one of them is going to try and get in the grave vacuum.
What is your favorite quirk about your betta?