There's something about big teeth that makes fish scary, especially the humpback anglerfish, with an added bonus of a dark, slimy body. This one is a female, about the size of a tennis ball. The male is smaller, about the size of a jelly bean, and mates with the female by latching onto her with his hooked teeth, drinking her blood and supplying sperm, according to The Encyclopedia of New Zealand. How romantic.
Government of New Zealand