Check out the world’s smallest aquarium, featuring a vibrant, colorful mini fish tank packed with life! Watch as we set up and showcase this tiny yet stunning aquatic ecosystem, complete with live ...

Marine biologist Monica Biondo has spent more than a decade studying the multibillion-dollar market for these colorful fish.

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 ...