Hey guys. I got home from school today and to my surprise, there were groups of eggs stuck to the glass all over my tank. I know they did not come from my gymnogeophagus, so I have narrowed down the culprits to either my red eye tetras or my bronze cory cats. I am pretty sure that they belong to the cory cats, which I got less than a week ago. I am not even sure if the eggs are fertile though. Can anyone help me out with this? I've included some pictures: