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
751	Lebanese youths take up rods and reels to learn sustainable fishing	mongabay	2024-03-27	LB
752	Man cited for allegedly illegally spearfishing in Waikiki	spectrumlocalnews	2024-03-27	US
753	92-pound fish that somehow made it into a Louisiana lake	nola	2024-03-28	US
754	Montgomery County fertilizer spill kills nearly 750,000 fish	kcrg	2024-03-28	US
755	Experts sound alarm over major threat to one-fifth of major rivers fish	thecooldown	2024-03-30	CN
756	Cambodian aquaculture centre supporting farmers with thousands of fish	thestar	2024-03-30	MY
757	Sticking up for fish against humanitys cruel double standards	waikatotimes	2024-03-31	NZ
758	Maine fishermen caught more fish	Associated Press	2024-03-25	US
759	Tennessee wildlife officials will pay you $100 to catch these invasive carps	tennessean	2024-03-25	US
760	UKs largest fish pass completed to help salmon	nottinghampost	2024-03-26	UK
761	Metal detected by X-ray of record fish caught in Kansas	mainstreetmediatn	2024-03-29	US
762	Julia Roberts brother Eric Roberts believes he can speak to fish	iosconews	2024-03-29	US
763	Georgia lawmakers strip public trust language from law affirming right to fish	ajc	2024-03-29	US
764	Sawfish Rescued in Florida as Biologists Try to Determine	Associated Press	2024-04-12	US
765	Aquatech collaboration aims for salmon farming circular economy	thefishsite	2024-04-17	UK
766	How Uttar Pradesh is expanding its aquaculture sector	thefishsite	2024-04-12	IN
767	Florida girl, 12, hooks multiple fishing records	Fox News	2024-04-13	US
768	No signs of herring stocks rebounding 2 years into moratorium	CBC News	2024-03-30	CA
769	over hundreds of fish spinning and whirling dead onto South Florida shores	ABC News	2024-03-29	US
770	Liquid nitrogen mishap kills 750,000 fish in rivers in Iowa and Missouri	yahoo	2024-03-29	US
771	Pet warning after toxic pufferfish washout hits Fish Hoek and Glencairn beaches	iol	2024-03-18	ZA
772	Kansas man catches world-record fish	yahoo	2024-03-18	US
773	Tilapia, highly adaptable and invasive fish, found growing in marine waters	mongabay	2024-03-19	IN
774	lack of action to stop fish dying in dried up Ashburton stream	rnz	2024-03-20	NZ
775	Federal advisory group recommends curtailed Oregon ocean salmon fishing again	KLCC	2024-04-15	CA