When did the first fish live on Earth – and how do scientists figure out the timing?

When did the first fish live on Earth – and how do scientists figure out the timing?

By Isaac Skromne

Source: roanoke

7/18/2022

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to curiouskidsus@theconversation.com.

How do you figure out how long ago fish were created? Hundreds of millions of years is a long time ago. – Josh, age 11, Ephrata, Pennsylvania

The oldest fossils of animals resembling a fish date back between 518 million and 530 million years ago. Discovered in China and called Haikouichthys, these animals were about an inch long (2.5 cm) and had a head with seven to eight slits at its base that looked like gills. They also had a distinct spine surrounded by muscles.

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News Id		Source	Stamp	country
3351	Мексиканским специалистам удалось вернуть в естественную среду обитания вымерший вид «рыбы-текилы»	hightech	2022-01-03	MX
3352	Canadian Cory Johnston captures first Bassmaster fishing title	ctvnews	2021-09-11	US
3353	Fisher loses record after massive catfish eaten	ctvnews	2021-09-29	US
3354	Concerns raised by salmon group over discoveries of farmed fish in East Coast rivers	cbc	2021-12-03	CA
3355	B.C. man receives lifetime fishing ban	fishncanada	2021-12-25	CA
3356	Ученые обнаружили, что рыбы-лучники умеют считать	RG	2021-12-29	IT
3357	Mississippi state confirms 4 new fishing records, some set by children	Fox News	2021-12-28	US
3358	На Байкале предлагают навсегда запретить промышленный вылов омуля	Рыболовство	2021-12-27	RU
3359	Scripps researchers hope rare fish can give glimpse of deep-ocean diet	10news	2021-12-15	US
3360	It’s no fish tale: Sausalito charter fishing captain to retire after 50 years	Marin Independent Journal	2021-12-18	US
3361	Avid angler makes bamboo fishing rods	gillettenewsrecord	2021-12-19	US
3362	Maine fishermen want you to eat more monkfish, even if the fish are hideous	bangor daily news	2021-12-20	US
3363	‘Rare find.’ A second terrifying deep-sea fish washes up on California beach	sacbee	2021-12-15	US
3364	Robotic fish scares invasive species so badly that it cannot breed	newscientist	2021-12-16	US
3365	Ocean acidification disrupts the behavior of fish shoals	Earth.com	2021-12-17	US
3366	State of Hawaiʻi Seeking Public Input on Proposed Fishing Rules for Reef Fish	Maui News	2021-12-07	US
3367	Decapitated shark head dumped on car as bitter fishing contest turns violent	mirror	2021-12-09	UK
3368	Rare video of a strange fish with a see-through head has been captured by researchers	ceng news	2021-12-09	US
3369	8-year-old lands hefty white sturgeon on Sacramento-San Joaquin River Delta	opb	2021-12-06	US
3370	Good Samaritans rescue Ocean Sunfish stranded in Neuse River	wcti12	2021-12-07	US
3371	Enormous fish 'like half a mutilated shark' could beat world record with giant size	mirror	2021-12-09	UK
3372	Columbia Riverkeeper sues Army Corps, says hot water discharge from dams kills fish	Tri-City Herald	2021-12-09	US
3373	In southern Colombia, Indigenous groups fish and farm with the floods	mongabay	2021-12-08	CO
3374	After 50 years, Sarasota's Fish Whisperer Jonnie Walker hanging up his rod	Sarasota Herald-Tribune	2021-12-07	US
3375	Fishermen say offshore wind surveys rip up gear: ‘There has to be accountability’	nationalfisherman	2021-12-07	US

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