TEHRAN – The Department of Environment (DOE) is drafting an action plan for the preservation of sharks and rays. “It is a ...

A fossilized tooth of a cartilaginous fish found in Japan's northernmost prefecture Hokkaido in 2013 is of a newly discovered ...

This left the question of whether they are just a feature of bony skeletons in general or if they are also found in fish with cartilaginous skeletons, such as sharks and skates (there are no land ...

Analysis revealed cavitated joints in the cartilaginous fish, but not in lampreys. Additionally, the cartilaginous fish exhibited certain proteins and developmental processes that are shared with ...

bony fish, Osteichthyes; cartilaginous fish, Chondrichthyes; and jawless fish, Agnatha. The discipline can include the biology, taxonomy and conservation of fish, as well as husbandry and ...