Someone pinged me offline and asked if my brunneus ever darkened up. Figured I would share: No. Another 6+ months from my post above, it looks the same. Still a light tan almost pink color with the only dark color is a small very light band along the sides where the spine should be. Looks just the same as my photo above from Oct 3, 2022 only bigger. It's a good 3 inches and fat from being well fed, but almost no color change still. It's "stuck" in the juvenile colors. lol. I was hoping and expecting to have that dark menacing looking fish that I've been in photos, but no luck. Mine is rather boring color-wise.