I've worked in threatened fish conservation and management for more than 35 years, but this species is special to me.
When the post-bushfire rains finally arrived, the situation for many fish species went from dangerous to catastrophic. A slurry of ash and mud washed into waterways, sending oxygen levels plummeting.
As climate change warms northern rivers and changes precipitation patterns, some types of cold-loving fish are failing.
Mediterranean groupers are not alone: they are home to a wide variety of parasites.
A new study shows high-fibre brown rice also contains more arsenic than white rice – so which is better for you?
Fish must be released into good quality water, with suitable habitat and lots of food. These conditions have been quite rare in Murray Darling rivers in recent years.
Colossal squid have eyes the size of soccer balls, and can weigh up to 700kg. That's a lot of calamari!
The NSW government is soon expected to grant environmental approval to Snowy 2.0. But that process should be halted.
With restaurants closed and prices dropping, fishers are finding new ways to keep their business above water.
From a scientific perspective, the results are fascinating and world-first. From a personal perspective, what I saw will stay with me for a long time.
The arrangement of bones in our specimen's fins are the same as those of 'fingers' in tetrapods. The only difference is the digits are locked within the fin, and not free moving.
Fish, frogs, turtles and platypus at major risk of extinction following the bushfires. So why aren't they getting much attention?
Recent rains have not eliminated the threat of a repeat of last summer's mass fish deaths.
Fire debris flowing into Murray-Darling Basin will exacerbate the risk of fish and other aquatic life dying en masse in a repeat of the shocking fish kills of last summer.
Regulations have lowered mercury emissions globally, but the risks to ocean ecosystems and human health may be getting worse.
The EU continues to enter into fresh agreements with countries, despite evidence of serious population declines in the species of interest.
Fish may not have eyelids to close, but they sleep – and perhaps even dream.
Consumers are increasingly concerned about the sustainability of their fish.
Nutritious fish are being diverted away from countries that could benefit from them the most.
Fish can't read maps, and their eggs and larvae drift across national boundaries. Recent research shows that local problems in one fishery can affect others across wide areas.