No or low natural light will change the way the color appears. Could be iron as it responds to light as brown in water. Does look a little turbid. Thanks for the pics. Those guys have grown a bunch.
Yeah it's deceptive.
BTW the board of animal health is picking up 60 for VHS testing Thursday morning. At least $300.00 worth of fish that will be slaughtered and $300.00 in testings fees. Gotta love the government. No VHS has ever been found on a fish farm but we are the ones that have to test.