Oh, heck no to water pressure. Gill membranes are too fragile for that. Imaging trying to stop a fat kid on a tricycle by wrapping your lungs around him.
Raphaels and budging are mortal enemies. The more you poke and prod, the harder they push. My big one, Gandalf, almost snapped the uptake tube in the display tank when I adopted him. I watched it bend and crimp more and more every time we nudged at him to get him out of there. He was furious, and I am truly in fear of how powerful those finger-pinching, tube splitting fins are.I tried to get him to close his fins, but they wouldn't budge.
