Goldfish might look nice, but they can also spread a variety of decidedly not-nice viruses.
Many pet fish end up in ponds, fountains and waterways. But before ditching your goldfish in the park, stop and think about the viruses you could also be releasing.
If these fish were released from farms, they might be hard of hearing.
Farmed fish have a high rate of a deformity that hampers their hearing, and this can be a problem if they're released into the wild.
This 119 million year old fish,
Rhacolepis, is the first fossil to show a 3D preserved heart which gives us a rare window into the early evolution of one of our body’s most important organs.
Dr John Maisey, American Museum of Natural History in New York
For centuries, the fossil remains of back-boned animals were studied primarily from their hardened bones. Now palaeontologists can study the softer side of these ancient creatures.
Bleached coral can take on luminously beautiful pink and purple hues - but don’t be deceived, these corals are under stress.
The bleaching hitting the Great Barrier Reef not only harms corals. As these close-up photos show, it also deprives many other species of a home and livelihood.
Don't confuse studies doubting some of the benefits with the bigger picture.
Filter-feeding fish have had 150 million years to improve filtration.
Rob Holm / USFWS
Even the best engineered filters get clogged eventually. Fish mouths have evolved structures that create unique fluid dynamics patterns that solve that problem.
Plastic fragments found in dissected fish.
Algalita Marine Research and Education
Dave West from the environmental group Boomerang Alliance told Fairfax that if you've got an average seafood diet in Australia, you're probably ingesting about 11,000 plastic pieces a year. Is that right?
New research shows fish are more similar to complex animals like humans and other mammals than we previously thought.
The remote rivers of northern Australia could be home to untold numbers of new and threatened fish.
Matthew Le Feuvre
A score of new fish species discovered recently in northern Australia remind us how little we know about our country.
Scuba diving must be done in a sustainable manner to preserve the industry.
Africa has a number of excellent scuba diving sites, but these must be maintained sustainably to keep attracting different divers.
The genetically modified salmon (rear) grows twice as fast as a non-GM fish.
The US food authority may have approved GM salmon for our consumption, but it may take time before any appear in our stores.
Fishermen rescued from a boat on which they were trafficked to work.
There are no proper laws to combat fisheries crime. As a result, a number of organisations need to join forces to stop the problem.
Satellite-tagged eels, ready for release.
Martin Castonguay, DFO
Much of what we know about these elusive eels' life cycle has been based on circumstantial evidence. Now for the first time, scientists tracked an adult eel to its distant spawning ground.
Maurice McDonald / PA Archive
A study suggests that stopping deep-sea trawling at a depth of around 600m makes sense.
Small but dangerous – and coming to the New World.
A small invasive fish known as the topmouth gudgeon has already wreaked havoc on European species and its arrival to the US and South America is only a matter of time.
This common lionfish (
Pterois volitans) was sighted more than 200km further south than expected down the NSW coast by 14-year-old scuba diver Georgia Poyner. It’s one of almost 40 verified observations she has submitted to Redmap.
We know the warming seas are forcing some marine life to new waters, but we don't know much about how fast and how far they are moving. But now you can help scientists find the answers with Redmap.
Samal, Philippines: protected area to manage fish recovery.
The combination of local fishing rights with adjacent marine reserves creates incentives to avoid overfishing and could improve nearshore, small-scale fisheries around the world.
The reefs of Indonesia - part of the Coral Triangle - could lose many of their species thanks to climate change.
How will climate change affect life in the oceans? New research shows that the answer is likely good and bad.
The Great Southern Reef is unique, beautiful and contributes significantly to Australia’s culture and economy. However, few of us realise the magnitude and value of this gem right at our doorstep.
T. Wernberg 2002
The Great Southern Reef covers 71,000 square km and contributes more than A$10 billion to Australia's economy each year.
Sardines (Sardinops sagax) in Mexico (Octavio Aburto)
Gulf of California Marine Program - http://gulfprogram.ucsd.edu
Over the past 80 years sardine and anchovy have become icons of modern-day marine biology, oceanography and climate research.