fangblennies
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These Fish Inject Predators With Opioid Venom And That Isn’t Even The Coolest Part
Fangblennies are tiny reef-dwelling fish only 5cm long that look like they came from some adorable deep-sea vampire movie. Only, if you’re a predator and you piss them off, they will wreck the crap out of you with their opioid-laced venom.