At first glance, the wolffish looks like an eel. It’s definitely a fish, but obviously a fish in a pretty bad mood. Its bottom jaw juts out, which makes it look sulky. The hard edges along its eyes make it seem irritated and angry. Could it be a friend of Grumpy Cat? Grumpy Fish? If you don’t know who Grumpy Cat is: the Persian is famous online for her scowl. By the way: this fish can grow to up to 7.8 ft (2.4 m) long! Quite the brute.