The Scent of Danger Makes These Fish Hulk Out

The Scent of Danger Makes These Fish Hulk Out

By Susan Cosier

Source: hakaimagazine

6/5/2021

Gilthead seabream swim back and forth in their tank, the yellow markings between their eyes that they’re named for flashing as they glide by. Carlos Díaz-Gil, a graduate student at LIMIA, the marine research and aquaculture laboratory of Mallorca in Spain, adds a few ice cubes to their tank. The ice is made of water from a neighboring tank containing black scorpionfish*, one of the seabream’s feared predators. Díaz-Gil knows that the scent of the scorpionfish, just a trace of its existence, will likely cause the seabream to change in surprising ways.

After a month, Díaz-Gil kills a select few seabream and measures them. The fish’s bodies have gotten deeper—bigger from back to belly—and more difficult for black scorpionfish to swallow, expanding in what appears to be a natural defensive change.

Continue...

News Id		Source	Stamp	country
1851	history of how the Catholic Church declared beaver to be a fish	salon	2023-02-25	CA
1852	salmon giant Tassal tried to stop public release of report on antibiotic	abc	2023-02-26	AU
1853	The strange history of how the Catholic Church declared beaver to be a fish	nbc15	2023-02-28	US
1854	Fly fishing with world champion Maxine McCormick	koin	2023-03-02	US
1855	Approximately one million fish killed near Broken Hill	9news	2023-03-18	AU
1856	Social rules help varied personalities work as a team	theguardian	2023-03-02	UK
1857	Rare fish released into Yangtze River in East China	chinadaily	2023-03-03	CN
1858	Electrofishing allows aquatic experts to count fish in the Curdies River to check river health	abc	2023-03-04	AU
1859	Giant invasive fish caught in pond in southern Taiwan	Taiwan News	2023-03-05	TW
1860	Are the feds sacrificing endangered salmon to help potato farmers?	salon	2023-02-25	US
1861	Social rules help varied personalities work as a team, fish study shows	coventrytelegraph	2023-02-27	UK
1862	Angler pulls 57-pound lake trout through the ice; ‘I was frozen’	news.yahoo	2023-03-15	CA
1863	More than $100K in fines issued for illegal fishing along B.C. coast, DFO says	CTVNewsVancouver	2023-03-17	CA
1864	Positive signs in newest capelin stock assessment	CBC News	2023-03-16	CA
1865	Fish are displayed as living works of art at colorful aquarium in Tokyo	stripes	2023-03-02	JP
1866	Endangered salmon will swim in California river for first time in 80 years	latimes	2022-07-16	US
1867	Plummeting salmon population could trigger closure of fishing season in California waters	latimes	2023-03-02	US
1868	Owner of fishing boat missing at sea suffers theft of fish pots	loopnews	2023-03-03	UK
1869	Hydropower killing, injuring and trapping fish by the tonne	msn	2023-03-06	US
1870	Gruesome vision reveals 'freaking weird' battles between ocean giants	news.yahoo	2023-02-25	US
1871	José Andrés Wants You to Eat More Lionfish	foodandwine	2023-02-28	US
1872	Freshwater Fish Are a ‘Significant Source’ of Forever Chemicals	sentientmedia	2023-02-28	US
1873	Fish fights erupt after mass coral bleaching, study finds	mongabay	2023-03-01	ID
1874	Louisiana fishermen film chaotic shark feeding frenzy	FOX 13 News	2023-03-01	US
1875	Two coal and mining companies are said to be responsible for the death of fish	indonewyork	2023-03-02	DE