The ornamental fish trade is a booming global industry that generates billions of dollars every year. Over 90% of this trade involves freshwater fish. One of the most popular freshwater groups is ...

Neon tetras are some of the most popular freshwater fish in the world. They’re beautiful additions to any home aquarium and are frequently studied in research settings. If you’re new to freshwater ...

In the underground caves of north-eastern Mexico, groups of blind fish appear to be developing cave-specific accents. The linguistic split could eventually contribute to ongoing speciation among the ...

Energy efficiency The eyeless, cave-dwelling form of the Mexican tetra fish (Astyanax mexicanus) has surrendered its circadian rhythm for the sake of saving energy in its pitch-black habitat. The ...

Since Yorktown Technologies first sold its genetically modified pet — the GloFish — in 2003, the fluorescent fish, an altered variety of zebra fish, has become a popular aquarium item, with millions ...