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An eel inside the digestive tract of a dark sleeper fish before its escape attempt.

Cleaner wrasse have the ability to construct a mental image of their body after looking at themselves in the mirror.

Tiny fish found to ‘check its body size in the mirror before getting into fights’

The proposal comes as part of the Barred Owl Management Strategy developed by the US Fish and Wildlife Service

Tasmanian businesses have formed a new group to campaign for the salvation of an ancient fish, fearing its demise could cost them dearly.

Salty anchovy butter, tapenade, garlic, more garlic, tinned fish, rocket, basil, garlic and cheese. And eggs.

The Southern Ocean encircling Antarctica is the world’s largest feeding ground for baleen whales – species like humpbacks that filter tiny organisms from seawater for food. In the 20th century, whalers killed roughly 2 million large whales in the Southern Ocean. Some populations, like the Antarctic blue whale, were reduced…

Eels that have been swallowed by fish have been recorded for the first time sliding tail-first back out of their would-be predators' stomach and escaping out of their gills, a study said Monday.

Japanese eels take an average of under a minute to escape fish gut, scientists find

Eels use tail-first technique to back up digestive tract of fish towards oesophagus before coming out of gills