☄ These dark purple crustaceans are known for having possible side effects - though it's rare. From this point, you can choose from two different things. He eats it and nothing happens. Which then you can have him explore the rest of the place and maybe get into some trouble, do some gambling, etc. Or you can have him have the side effects. The side effects would be that immediately after eating, he'd feel ill to the point he'd need to go lie down, either on the ship or somewhere on the mini colony. When he wakes up, and if he looks at his reflection, he'll notice that his eyes are little bit more purple than before. But it's not until he gets into water that it's obvious somethings different. He'll be able to swim inhumanly fast and can breathe underwater. If you want there to be physical changes of any kind when he's in water, I leave that up to you to decide.