After diverging from sharks and rays, fish from this period, and those that followed, evolved into two distinct classes: ray-finned fish and lobe-finned fish. Ray-finned fish are the ancestors of ...

A surging market for ‘fish maw’ is pushing threatened species to the brink. Researchers are trying to limit the damage.

For example, certain groups of ray-finned fishes show such regressive evolution—medakas, minnows, puffera, and wrasses do not ...

This "living fossil" can grow as large as an alligator, has two rows of needle-sharp teeth, and such strong armor that it ...

A study that examined diet reconstruction in southern stingrays along the Caribbean found that stingrays fed primarily on crustaceans, ray-finned fish, and worms. Supplemental research found that ...

鱼身上的那些暗搓搓的小刺，生物学上叫肌间骨，就是位于椎骨两侧肌间隔中的硬骨小刺 ，由肌隔结缔组织骨化而成。这种骨化方式称为膜内骨化或 ...

Series of paleomaps visualising the geographical and chronological aspects of the main events during the evolutionary history of the freshwater fish family Nemacheilidae across Eurasia. A red star ...

Black jawfish or opistognathus inornatus are a ray-finned species of fish. The fish are mainly found in coastal waters, coral reefs and rubble areas. There are known populations of the species ...

As part of the Animalia kingdom, the Barracuda is a big, predatory, snake-like ray-finned fish inhabiting saltwater areas and is well-known for its feracious behavior and fearsome appearance.

The researchers studied the genus Horaglanis of catfish -- a diverse group of ray-finned fish. The tiny members of this genus, only about three centimetres in length, live in local aquifers ...

This manuscript provides important new insight into the mechanisms underlying seasonal physiology, using medaka fish as a functional genetic model that naturally exhibits photoperiodic responses. The ...