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sailfin tetra

Life

Some male fish let rivals woo females and then hijack their courtship

Dominant male sailfin tetras stay hidden and watch while smaller, less-dominant males persuade a female to lay eggs – then they steal her attention in acts of "courtship piracy"

News

fish

Life

Fish brains grow when they have to think more and shrink if they don't

News

trout

Life

Fish are becoming addicted to methamphetamines seeping into rivers

News

seahorse

Life

Male seahorses can get pregnant because they lack key immunity genes

News

The deep sea hosts twice as many shapes of fish as shallow waters

Life

The deep sea hosts twice as many shapes of fish as shallow waters

News

Salmon lice

Life

Pesticide-resistant blood-sucking lice threaten wild and farmed fish

News

deep-sea fish

Life

Deep-sea snailfish repairs its DNA to survive 7 km below the surface

News

Electric catfish cannot be shocked and scientists don’t know why

Life

Electric catfish cannot be shocked and scientists don’t know why

News

pufferfish

Life

Pufferfish blink by pulling in their eyeballs and puckering their skin

News

The Mississippi River near Brainerd, Minnesota

Life

Humans have severely affected fish biodiversity in half of all rivers

Rivers are an important habitat for nearly 18,000 species, but over half of the world’s rivers have been heavily impacted by human activity, reducing their fish biodiversity

News

Life

Knifefish use electric fields to develop a complex social hierarchy

News

Life

Swarm of Pacific eels is largest group of fish seen in the abyss

News

Life

Megalodon sharks grew 2 metres long in the uterus by eating eggs

News

Environment

Adult fish sizes have shrunk over 50 years of sea temperature rises

News