The Talented but Endangered sawfish
Sawfish use electrical signals in their long saw-like snout to detect, stun and then stab.
Check out the video.
“Sawfish are very talented predators, their talents leave them very vulnerable to net fisheries,” says Martin. “Their saw is adept at finding prey but is at a high risk of entanglement, which unfortunately means they’re attracted to fisheries’ nets full of fish which they easily get caught in…” Aquarist Martin Garwood from Sydney Aquarium
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