Possibly, but when I could actually see in the tank there was never any aggressive behavior...just some headbutting over where the boundary between their territories was.
so theres actually fish in there wow. lol GDA maybe its not an acronym. perhaps its what you say when you see it. "No i got that algae again God DAmit!!!"
I'm still wondering why my tank is/was stuck in the zoospore stage. So far my digging has only gotten to the point that a zoospore is a method of asexual reproduction...I dont know much about algal biology but is there an environmental reason why it would not move on from that part of its life cycle?