Hi, welcome to Mass Effect Wiki! Thanks for your edit to the Mass Effect 2 page.
Speculation and being wrong. Edit
If you are going to make an edit, please make sure it is something that is factual. That is, something backed up by an official video, interview or article. Also don't make speculations based upon your own assumptions. That's a krogan on the box art, not a fish. And if you do find proof that it is some other new fish like species, then please make sure you put those changes in, rub my face in how wrong I am, and provide a link to the fact in one way or another.