filled with enthusiasts clamoring to find and acquire the sea's rarest treasures. Here, we introduce you to the world’s most expensive fish, ranked from least to most expensive. Price Tag: $50-$150 ...

A total of 19 pink freshwater dolphins belonging to an extremely rare species living in the east of landlocked Bolivia have been rescued from a river covered in mud and deforestation residue ...

Locally known as Bhulan, the Indus river dolphin is the most endangered freshwater dolphin species in the world. It is native to the Indus River system, with the only viable population existing in ...

This stunning display of nature is home to 26 endemic species, including the freshwater Ash Meadows ... vertebrate that also happens to be the rarest fish on the planet. Devils Hole pupfish ...

Freshwater pearl mussels are being bred as part ... "Adult mussels are brought into the hatchery in June and settled into a fish tank in a gravel basket," said Dr Taylor. "In August the mussels ...

A new colony of endangered freshwater pearl mussels has been discovered in north Highland. The rare species was uncovered ... Six barriers to fish passage will also be removed from tributaries.

NEW ORLEANS— The U.S. Fish and Wildlife Service ... “But we’re still witnessing a freshwater extinction crisis here in the Southeast. To make sure these mighty mussels have a future, we need to ...