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.

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News Id		Source	Stamp	country
4776	Mass fish escape raises concerns over fish farming	abc	2005-05-19	AU
4777	New fish species found off Taitung	taipeitimes	2005-05-28	TW
4778	In River of Many Aliens, Snakehead Looms as Threat	Washington Post	2005-05-28	US
4779	Foiling fugitive fish	innovations	2005-02-21	CA
4780	Scientist finds little surprise lurking at bottom of the harbour	smh	2005-07-11	CA
4781	Sinking Fish May Fast-Track Mercury Pollution to the Deep Sea	eos.org	2020-12-22	US
4782	Mint pollution kills 6,000 fish	bbc news	2005-07-04	UK
4783	How fish hear and make sounds at same time	innovations	2005-04-07	US
4784	Fishy secret of why men attract	bbc news	2005-03-22	UK
4785	Researcher Focuses on Atka Mackerel	NOAA	2005-03-18	US
4786	'Cowardly and selfish' act hits Turtles Kingston conservation effort		2020-08-24	CA
4787	Where goldfish come from	CNN/Money	2005-03-21	US
4788	Multiple genes permit closely related fish species to mix and match their color vision	eurekalert	2005-10-10	UK
4789	Angler floored by monster catch	bbc news	2005-08-01	UK
4790	Haddock catch plan sparks anger	bbc news	2005-10-21	UK
4791	Ban on long-line commercial fishing may be lifted / Restyled hook won't spare sea turtles, opponents contend	sfgate	2005-08-05	US
4792	New species are being found in record numbers in the river. Now TV viewers have a chance to name one of them	theguardian	2005-04-03	UK
4793	Criminal probe into Barents chase	bbc news	2005-11-01	UK
4794	Fish reveal hidden depths	theguardian	2005-04-15	UK
4795	Scientists call for urgent action to save Atlantic tuna	theguardian	2005-04-28	UK
4796	Some fish like it hot	abc news	2005-04-27	NZ
4797	Tuna fears exaggerated	starbulletin	2005-04-30	US
4798	Quarter of Irish sea cod 'illegal'	bbc news	2005-12-07	IE
4799	'Splash' R.I.P.; Former World Record Blue Catfish Turns Fins Up	underwatertimes	2005-12-09	US
4800	Risk assessments urged for fish escaping from net-pen aquaculture	innovations-report	2005-03-05	US

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