Well, my son's
betta Oscar who has a 10g all to himself was very busy this morning! I went to do a
water change, inserted the vacuum in and started siphoning. I lifted the top of the tank so I could get at the gravel, and I found loads of bubbles on either side of the tank! He looked at me as if to say "Hey, I spent a lot of time doing that, now I have to start over!"
Well, it is a good thing, and my son is very happy and excited about this new thing his fish is doing. He is very interested in science, so he asked a lot of questions!
Just thought I would share!
Here is a picture of Oscar. I could not get one of the bubble nest, because we were in the middle of tank maintenance, and I don't like to prolong the stress on the fish.