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Venom of tiny fish could lead to new pain treatments

WASHINGTON: Tiny fanged fish called blennies, which swim in the coral reefs of the Pacific Ocean, are armed with an unusual venom that could inspire new pain medications, British and Australian scientists said this week. The venom of these fearless 1.5-three inch (four-seven centimeter) swimmers -- which are popular tropical aquarium fish -- numbs would-be predators, rather than causing them pain, said the report in the journal Current Biology. "The fish injects other fish with opioid peptides that act like heroin or…