Not all fish are big, flashy, or easy to spot. Some are so tiny that you could swim past them a dozen times without noticing.

For decades, scientists used a mirror experiment to explore whether animals could recognize themselves. In that test, ...

Researchers in Alberta uncovered a fossil fish that rewrites the evolutionary history of otophysans, which today dominate freshwater ecosystems. The new species, Acronichthys maccognoi, shows early ...

A routine fishing trip turned into a surprise windfall when a group of fishermen pulled up a nearly 10-kilogram fish in a ...