fishes

04/19/2013 - 11:29

 Fishes account for over half of vertebrate species, but while groups such as mammals, birds and reptiles have been fairly well understood by scientists for decades, knowledge about relationships among many types of fishes was essentially unknown – until now.

 

05/08/2012 - 08:26

Jobs, livelihoods and ecotourism industries can benefit from having a diverse supply of weed-eating fish on the world’s coral reefs, marine researchers say. Despite their small size, relative to the sharks, whales, and turtles that often get more attention, herbivorous fish play a vital role in maintaining the health of coral reefs, which support the livelihoods of 500 million people worldwide, say researchers from the ARC Centre of Excellence for Coral Reef Studies at James Cook University, and the Australian Institute of Marine Science.

01/16/2012 - 18:35

As average global temperatures rise, larger parts of the world's oceans could become anoxic dead zones. This is shown by an analysis of the oxygen conditions during the past 20,000 years.

01/13/2012 - 22:42

Researchers from The Australian National University have shown that female mosquitofish prefer males who had a solid nutritional upbringing, even if the males are superficially identical to their poorly-fed brothers. Their findings are published online in Biology Letters.

11/23/2011 - 13:30

Guppies in the wild have evolved over at least half-a-million years - long enough for the males' coloration to have changed dramatically. Yet a characteristic orange patch on male guppies has remained remarkably stable, though it could have become redder or more yellow. Why has it stayed the same hue of orange over such a long period of time?

 

11/10/2011 - 15:36

Can fish save coral reefs from dying? UC Santa Barbara researchers have found one case where fish have helped coral reefs to recover from cyclones and predators.