On a different note, my long fin chases the McCoskers but generally does not interact with other fish in the tank. However, a few weeks ago my two gladiator clowns decided they were going to start hosting a small trachy they had taken a liking to. The clownfish were establishing their new territory around the trachy and were being a bit more confrontational than usual for a few days. This culminated one night into a small spat between the Ruby and clowns that I was able to catch on video.
Here is the short video of the interaction. Seeing the Ruby flare up and flash was really interesting and showed how beautiful the fish can look (otherwise looking rather “plain” for a fish with such dazzling relatives). I think rubys might get more love than they usually do if they didn’t always have damaged fins from shipping and a drab appearance in LFS.