Can fish learn simple math? They can when a treat is involved

Can fish learn simple math? They can when a treat is involved

By Galadriel Watson

Source: washington post

9/21/2022

Credit: iStock

It’s no shocker that Harry and Hermione would know that 4 – 1 = 3. But what if I told you that this Harry and Hermione aren’t characters in Harry Potter stories — they’re stingrays. And they can still do this type of math.

A study from Germany’s University of Bonn tested the mathematical abilities of several freshwater stingrays named after Harry Potter characters. They also tested a type of African fish called a cichlid (pronounced SICK-lid), and they were given names such as Jennifer and Tiffany.

River stingrays

Continue...

News Id		Source	Stamp	country
876	Chinese fishing vessels are going scorched earth and pumping cyanide	yahoo	2024-02-23	CN
877	На Амуре глухозимья не бывает	ohotniki	2024-03-05	RU
878	When Britain and Iceland went to war over fish	pulse	2024-03-01	UK
879	Discovery of exotic fish related to piranha in Irish lake raises concerns	ireland live	2024-02-20	IE
880	Ohio Fish Rescue helping surrendered fish live their best lives	News 5 Cleveland	2024-02-21	US
881	Fish bombing still rampant and must be tackled says Sabah minister	thestar	2024-02-22	MY
882	Photo shows a 100-pound tropical fish washed up on an Oregon beach	Business Insider	2021-07-21	US
883	Mystery mass fish deaths in Whanganui spark call for publi's help	1news	2024-02-24	NZ
884	Falkland Islands dispute is causing fishing free-for-all in nearby Blue Hole	theguardian	2024-02-19	AR
885	Any fishing of NSWs beloved blue groper could lead to jail under new ban	theguardian	2024-02-20	AU
886	Rare fish species hasnt been seen in creek for 20 years	yahoo	2024-02-21	CA
887	Hundreds of dead fish wash up on beaches	rnz	2024-02-23	NZ
888	Hong Kong as a reef fish haven	mongabay	2024-02-22	HK
889	Six-year-olds catches land him elite angler status	khou	2024-02-24	US
890	Ice fishing obsession faces peril in changing Wisconsin climate	captimes	2024-02-25	US
891	How Frances flagship salmon farm plans to adapt to climate change	thefishsite	2024-03-06	FR
892	Scientists Seek to Understand Impacts of Historic Lack of Great Lakes Ice	usnews	2024-03-07	US
893	Рыбалка, которую трудно забыть	ohotniki	2024-03-04	RU
894	PROBE Fishing Launches Smart Fishing Sensor Tracking the Lure	einnews	2024-03-07	SE
895	Collective sensing in electric fish	nature	2024-03-06	US
896	Aquarium cleaner who got incredibly rare type of fish tuberculosis	dailymail	2024-02-20	UK
897	X-ray reveals apparent ball bearings stuffed in record white crappie	cbs12	2024-02-20	US
898	Warmer springs, variable ice-out dates are hurting walleye spawning	echopress	2024-03-01	US
899	Proposed fishing restrictions causing concern for Port Renfrew residents	cheknews	2024-03-02	CA
900	Trout Fishing in America concert comes to The Waldo	penbaypilot	2024-03-03	US