my channel is a brand new cat. I do realize he picks a fish to hang with, since I brought him home 3 months ago he always hung out with my Tiger Shovel nose. We set the 55g back up and put him with a 12in Sailfin Pleco like yours and an 11" (Freshwater cowfish I think is called a SLEEPER either small eyed or Marble) I have to post a picture. I think the Redtail had been torturing him because now he swims around more, but has taken a liking to the Sleeper. The Pleco is a little agressive. Before we put them in the 55gal the Pleco was fighting with the TSN.