I have a few tetras in my ten gallon with a 4.5" pleco, some platy's and a GBR (german blue ram) i was watching my tank and noticed the GBR was herding the tetras into the corner of the tank and then chased other fish away from the tetras. Everywhere the neons go she goes as well. She's not harming the tetras and seems to keep the platy's away but i'm just wondering if this is normal or if she has something wrong with her.