Hey thank you!
The ones I picked up are probably 1.5 inches long. They were sitting together above where they have the frags on display in those smaller tanks across from their reptiles behind their showcase tank. I know clownfish have a brutal hierarchy system, and I these were both the same size when I got them. Which is inclining me to think this is just a part of that process. I'm not getting nipping or anything between the two, but the black clownfish will do like a mini-charge at the orange clownfish and look like its nipping at it, but so far nothing on the fins(luckily). It seems the aggression came when the black clownfish dug out a foxhole under one of my rocks. For a week or so, they were sleeping together, and I noticed my black clownfish had a droopy jaw. I don't believe this was from locking jaws with the other fish and fighting as the orange clownfish always submits, but I can tell gets upset from time to time and will do a mini-charge back at the black clownfish. So I attributed this so maybe he got hurt digging out his foxhole(photo down below). Also looked like he had a little cut around his lip, so I immediately took out my carbon, and added some bactershield by Fritz, and i'm not even kidding, healed overnight. Since then, the aggression picked up a little bit. I'm thinking of perhaps moving my rock around to confuse them and make them feel they are in a new area to explore to eliminate that territorial behavior over the foxhole and hopefully restart the friendship between them. Here is the video of the fish here <- YT video of adding them to my nano.