Ever heard of a fish that lives in a tree? Well it's very rare, and it's been found in Belize. It's called a mangrove killfish and U.S. researchers have found that it spends several months of the year living inside rotting branches of mangrove trees.
The biologists say the remarkable creatures temporarily alter their biological make-up so they can breathe air, enabling them to survive out of water for long periods. But as soon as they return to water, these changes are reversed.
A team from the Brevard County Environmentally Endangered Lands Programme in Florida made the discovery while wading through swamps in Belize where they found hundreds of the very literal fish out of water hiding in the rotting branches and trunks of trees.
They go inside seasonally when the pools of water around the roots of mangrove trees dry up.
