Scientists are now engaged in a desparate effort to save an ugly and fatty vampire fish. That's right, the endangered lamprey has a rasp-like mouth that it uses to attach to other fish and suck their blood.
Why protect vampire fish? Because lampreys play a crucial role in the life cycle of salmon and other fish, living as little worms on the bottoms of rivers when they're young and providing a rich fatty food supply for salmon.
Lamprey were neglected and even reviled because of their unseemly blood-sucking habits as adults, but now we know better.
Just goes to show, don't discriminate against someone or something just because it's a disgusting blood-sucker. Vampires need love too.