Hi I was wondering if anyone has ever had an Oscar that has acted like this. First off I have two Oscars in a 90 gal tank. Both are about 5.5 inches long. One is a black tiger and the other is a red albino. I recently added a 5" round bubble disc to the tank and my Black Tiger has grown attached to it. If I come next to it, or anyone else it attacks the glass. I also have a 4-line catfish, if the cat comes next to the bubbles he attacks it. If I turn the bubbles off he or she attacks everything else in the tank. I've owned several Oscars over the years and have never seen anything like this. I'm thinking of taking video of this and posting it to youtube.

Oscars are weird fish sometimes, who knows why they do these strange things? Mine do strange things sometimes, not quite as strange as that though. Post a video on here as well, our members would love to see it

I will, today the black tiger has a new game. It is picking up gravel and spitting it at the 4-line cat. If he or she does it again i will film it and post.