Fangs at the readyCasewell et al.By Andy CoghlanIf you swallow this tropical blenny, you’re likely to have bitten off more than you can chew. It has two prominent fangs on its lower jaws, which it uses to inject a unique venom that sends predators into a limp mess. When a predator engulfs a blenny, the tiny fish bites the predator’s gums. The bigger...