^
The Southend United training video.
When stood in front of an open goal you nudge the ball in.
Printable View
^
The Southend United training video.
When stood in front of an open goal you nudge the ball in.
Apparently worth US$ 2 Mio
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Fish losing survival instinct, study says
Fish are losing their survival instinct -- even becoming attracted to the smell of their predators -- as the world's oceans become more acidic because of climate change, a new research report said on Monday.
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Reef fish are seen swimming in Milne Bay, in eastern Papua New Guinea, on April 14, 2014
The study of fish in coral reefs off the coast of Papua New Guinea -- where the waters are naturally acidic -- showed the animals' behaviour became riskier.
"Fish will normally avoid the smell of a predator, that makes perfect sense," lead author Professor Philip Munday from Australia's James Cook University told AFP.
"But they start to become attracted to the smell of the predator. That's incredible.
"They also swim further from shelter and they are more active, they swim around more. That's riskier behaviour for them -- they are more likely to be attacked by a predator."
Munday said the research, published in the journal Nature Climate Change, was important given that about 30 percent of the carbon dioxide released into the atmosphere is ultimately absorbed by the ocean, a process which results in the seas becoming more acidic.
Acidification around the reefs studied is at levels predicted to become ocean-wide by the end of the century as the climate changes.
Munday said the fish appeared to have failed to adapt to the conditions, despite living their whole lives exposed to high levels of carbon dioxide.
"They didn't seem to adjust within their lifetime," Munday said.
"That tells us that they don't adjust when they are permanently exposed to these higher carbon dioxide levels and we would have to think about whether adaptation would be possible over the coming decades."
Munday said the "seep" to which the fish were exposed -- in which carbon dioxide from undersea volcanic activity bubbles to the surface -- was the perfect "natural laboratory" for the study.
Close to the seep there is no coral growth, but further away lies a unique coral reef zone with carbon dioxide levels similar to those forecast for future decades.
Co-author Jodie Rummer said while the increased carbon dioxide in the water affected how fish behaved, it did not appear to affect their athletic performance.
"The metabolic rates of fish from the seep area were the same as fish from nearby 'healthy' reefs," she said in a statement.
"So, it seems that future ocean acidification may affect the behaviour of reef fishes more than other aspects of their performance."
The research was conducted by James Cook's Coral Centre of Excellence, the Australian Institute of Marine Science, Georgia Institute of Technology and the National Geographic Society.
:sorry1:
What is the life span of your average gold fish?
20+ years in the wildQuote:
Originally Posted by Loy Toy
10 years or less in captivity, depending upon whether you have a cat.
My first goldfish, that I got, no - WON, from the local fair, only lasted my first day at school. When I came home it was gone. I had left it in the kitchen, and I had no covered the bowl. In retrospect, I always wondered if Fred, our cat, had some part to play in the episode...
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I just inherited a lovely aquarium with 8 maturish gold and silver fish plus two huge black suckers.Quote:
Originally Posted by Thormaturge
I really like having them here and hope they stick around for a long time.
^
I bequeath my stately mansion and $ 1,million to the gardener, and my aquarium containing ten fish to Loy Toy"
Enjoy. Do you have a cat?
No cat mate.
Actually didn't inherit but adopted the monsters. :)
Do the black suckers attack the other fish? The large one is about 5 inches long and moves at incredible speed when it breaks the surface water.
My wife told me they do but I have not seen any evidence.
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Is this your black fish? If so then he will probably eat the other fish.
If it isn't then post a few pics.
Hard to tell exactly from the picture mate (LOOKS VERY SIMILAR) but the fish I am referring to are black in colour with grey spots and act as vacuum cleaners that mainly feed off the droppings of the other fish and suction themselves to the walls.Quote:
Originally Posted by Thormaturge
And the other fish are quite large (lionhead) and I wish I could post pictures but for some reason I cannot upload from my gallery.
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Recognise him?
^ Definitely not mate. That's a blooming SHARK.
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Sucker fish, apart from eating algae, will attack other fish and are nocturnal so you may not see them doing it.
My goldfish, Bill and Ben, lasted about a week. They were overfed. My mum told me decades later that on their last day it looked like they were swimming around in soup. My dad flushed them down the toilet whilst i was at school.
We got a kitten a week later.