I have a pair of Texas around 5-6" in length. For the past week they've been 'rubbing' themselves against things. I've been watching carefully for parasites or something, but nothing is visible...assuming there is reason for it. There are other fish in the tank, and they've begun this strange behavior now as well. The chineese algae eater looks pretty funny doing this. Anyway, they're all in a 55gal tank, and the water parameters are good. I'm just curious if anyone has seen this before? Or if it's a sign of something to come? Maybe ich, before it's really visible? Any help or thoughts are much appreciated. 