Tiny fish foils predators by injecting them with opioid venom

The tiny fish Meiacanthus nigrolineatus, also known as the fanged blenny fish, doesn’t look like much, but it has a secret weapon to keep predators at bay: venom. This venom is used to stop predators in their tracks, causing their blood pressure to drop and their ability to eat the blenny to diminish. While most fang-based venom causes extreme pain … Continue reading