Leucism
When he arrived at the dock, he tied off his boat and stepped off with the creature in his arms. The man at the dock’s eyes grew wide as he noticed the catch. Leon walked straight to him and begged for answers.
The man’s English still wasn’t great, but he caught one word, “Leucism.” It sounded scientific enough, so he decided to look up the answer once he deposited the creature in his cooler box and got back to his motel room.