Climbing fish uses gill plates to ‘crawl’ on land

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DUBLIVE: This is a fish very casually dragging itself through the mud by its gills. One that reportedly puffs up when eaten, suffocating its predators from beyond the pale. Nothing to see here.
It also might pose a threat as an aggressive invasive species in Australia, so that’s something to add to the (already abundant) nightmare fuel.
The climbing perch (Anabas testudineus), native to southeast Asia, has been working its way southward for years. In 2005 it was spotted on islands near mainland Australia, and now one researcher claims it could make it all the way to the continent. No one expects the little guys to swim very far (or walk very far, for that matter) but Nathan Waltham, a senior researcher in wetland ecology at James Cook University, claims that the fish is much more tolerant to saltwater than previously believed. That means it could presumably make its way to Australia on the bottom of a fishing boat.