‘Spinning and whirling’: Strange fish behavior sparks emergency government response

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Ripley’s Aquariums plan to take up to six smalltooth sawfish into their facilities. A spokesperson said that a majority of the company’s animal care team will help with the effort, including by transporting sawfish to its Marine Science Research Centers and caring for them.

The Mote Marine Laboratory and Aquarium said in a release that it, too, is eager to help, with quarantine facilities ready for rescued sawfish. 

“Attempts to solve this mystery call for robust collaboration,” said Kathryn Flowers, a Mote postdoctoral research fellow and the lead scientist for the initiative.

The issue is affecting many kinds of fish off Florida’s coast, according to Dean Grubbs, the associate director of research at Florida State University’s coastal and marine laboratory.

“It’s been species all the way from the very small bait type fish, like pin fish, all the way up to things like groupers and even some stingrays,” he said.

A smalltooth sawfish
This image provided by NOAA shows a smalltooth sawfish. Endangered smalltooth sawfish, marine creatures virtually unchanged for millions of years, are exhibiting erratic spinning behavior and dying in unusual numbers in Florida waters. Federal and state wildlife agencies are beginning an effort to rescue and rehabilitate sawfish to find out why.NOAA via AP

There are some theories about what’s happening, Brame said, but it’s difficult to arrive at a quick answer in these types of events.

“To some degree, I’ve heard it described as trying to find a needle in a haystack,” he said. “But there’s so many different possibilities that it’s really difficult to isolate which one it could be.”

The Florida Fish and Wildlife Conservation Commission said on Wednesday that it had found evidence to rule out some potential causes. The fish did not appear to be suffering from a communicable disease or bacterial infection, it said, and other factors like oxygen, salinity and temperature were not suspected to be factors, either.

The commission’s hotline for sawfish sightings, which has been around for years, has seen an uptick in calls over the last month. 

Sea Mckeon, director of marine programs at the American Bird Conservancy, said his organization is monitoring the fish situation closely as well, but it has not yet seen a link to any bird mortality. To help scientists figure out the underlying causes, he said, members of the public can record instances of strange fish behavior that they see out on the water, and upload videos or photos to community science sites like iNaturalist.org.

Grubbs said the issue seems to have gotten worse since February. 

“It’s extremely distressing to see these sawfish dying, as we’ve spent the last 15 years studying them,” he said. “And it’s hard. It’s hard on my students to see it, my graduate students — it’s definitely distressing. We want to get to the bottom of it and figure out a way to come back from this.”



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