Red fish are a favorite for both novice and expert fish enthusiasts alike, making them a popular choice for aquariums, large and small.

Upwelling of phosphorus-rich deep water promotes an N-fixing symbiont of the Sargassum algae giving it a competitive advantage. • Each year, vast mats of Sargassum spread across the tropical Atlantic, ...

The most expensive aquarium fish list for 2025, ranked. See the world's most expensive fish, worth over $400,000.