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Articles related to fish

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Cover Story: Small Fry
Fish are becoming smaller all over the world as oceans change and catches increase, with even small changes having great consequences for ecosystems and fisheries.
Browse: Fish out of water are more common than thought
Gogonasus
Feature: The First Breath
The African reedfish Polypterus has revealed how breathing first evolved in terrestrial animals, and perhaps how the structures of the ear first formed.
The oil spill at Montara lasted for 74 days.
Feature: After the Oil Spill
Just 4 years after the Montara oil spill, scientists have compiled the most detailed description yet of the wildlife, fish and habitats of the Timor Sea as they monitor the recovery of the species affected by the spill.
 Moorish idol
Feature: Tropical Invaders Seek a Cool Change
As oceans warm, a new study has shown that certain measurable traits may help scientists predict which species of tropical fish will successfully shift into cooler temperate waters.
Browse: Fish Don’t Feel Pain Like Us
Browse: Parasites Turn Fish
Parasites can make fish left- or right-finned, or at least with a tendency to turn one way, according to researchers at the Australian National University.
Browse: Mirror-Eyes Reflect Evolution of Vision
A small tropical fish uses mirror-eyes on the side of its head to help see its prey in the darkness of the deep sea habitat, according to research published in Proceedings of the Royal Society B.
Browse: Legless on Land
In another blow to proponents of Intelligent Design, clues have been found to the evolution of one of the world’s oddest fish, the Pacific leaping blenny (Alticus arnoldorum).
Banded marwong
Feature: Fish in Hot Water
Warming waters in the Tasman Sea may have exceeded the tolerance limits for fish growth. Image: Hugh Pederson
Some reef fish require large table corals to conceal them.
Feature: Shade & Light
Climate change is reducing the complexity of coral reefs, with implications for the reef fish that require large table corals to conceal them from predators, prey, and even ultraviolet light.
Sensors fitted to yellowfin bream revealed behavioural changes after rain.
Feature: Fish Bite at Night After Rainfall
Bream in an estuary near Sydney become nocturnal following rainfall, adding to the growing body of evidence that environmental changes can influence the behaviour of species.
Artist’s reconstruction of Metaspriggina walcotti. Credit: Maryanne Collins
Feature: The World’s Oldest Fishes
Just 6 cm long and lacking fins and bone, the world’s oldest fish looked more like a worm yet it was the most advanced creature on Earth about 518 million years ago.
Feature: Do Fish Feel Pain?
If you want to know whether your pet goldfish can feel pain you had better look inside its head to see if it has the brains for it.
Feature: Fishy theories about pain in fish
There's more to sensory perception than the complexity of an animal's brain circuitry.
Credit: Stephen Coburn/adobe
Feature: Recognising Nemo
Recent studies are helping to dispel the myth that fish have a 3-second memory. In fact, some species of reef fish can even recognise human faces.
Browse: Fish Slimed to Death
Hagfish filmed choking predators with noxious slime.
Browse: Garlic Deters Bloodsuckers
Garlic can protect fish from parasites.
Browse: Fish Dive Deep to Beat the Heat Browse: Reef Fish Talk in UV
Browse: 53 Genes Help Reef Fish Respond to Warmer Oceans Eureka!: How a Chip Packet Can Sterilise Water
Chip packaging is providing a cheap material for a water purification system in the Highlands of Papua New Guinea, and a “salmon cannon” is helping salmon swim upstream.
Fossil File: The Placoderm Renaissance
Placoderm fish were once thought to be an evolutionary dead end, but new evidence is rewriting their importance to the ancestry of all jawed animals – including humans.
Online Feature: Tiny reef speedster challenges tuna in the ocean sprint
Tiny coral reef wrasses can swim as fast as some of the swiftest fish in the ocean – but using only half as much energy to do so.
Online Feature: New evidence lifts the stakes on the meat vs fish debate
Two recent papers have shed more light on the benefits of fish oils and the reasons why red meat might be bad for you.
Online Feature: Extraordinary 'missing link' fossil fish found in China
Discovery gives us powerful new insights about the building of the human body plan, which began seriously with these ancient fossil fishes.