Scientists discovered a tiny fish that can climb up a 50-foot waterfall in the Democratic Republic of Congo, a rare feat for a small fish.

Add Yahoo as a preferred source to see more of our stories on Google. Javier Zayas/Getty Images When it comes to seafood, larger fish, like tuna, salmon, cod, mahi mahi, trout, and swordfish, usually ...

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.

Small fish might be tiny in size, but they bring massive personality, beauty, and serenity to your tank. If you're working with limited space or just starting your aquarium journey, choosing small ...

It’s the little fish that roared. One of the world’s smallest fish, measuring about half an inch long, can produce sounds as loud as fireworks or a jet engine, a new study says. Danionella cerebrum, a ...