Did you know some species of pet fish can live as long, if not longer, than dogs and cats? Learn how this wonderful species lives so long, and how.

Both new and experienced pet fish owners often fret about finding a healthy species to introduce to their aquarium. But, how ...

Below are some reasons why some fish species are aggressive: Fighting for food. Some fish will always compete for food. An aggressive fish will fight off other fish that are perceived to be a ...

Near a village in northeastern India, a “dwarf”-like creature with a “large” mouth swam through the river — or tried to, at least. But something pulled it out of the water, moved it around and dropped ...

This species, with its many varieties, is the most common betta fish found in aquariums and pet stores, but it has more than 70 relatives, including the endangered Betta miniopinna and Betta ...

despite being popular aquarium pets for decades. Looking at the fish in a laboratory, researchers quickly realized they’d discovered a new species: Hypancistrus seideli, or Seidel’s armored ...