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logo 11/28/2024 8:38:37 AM     
Bizarre egg cases lead to discovery of new deepwater catshark species 
AU Source: interestingengineering 5/12/2023
Bizarre egg cases lead to discovery of new deepwater catshark species
Credit: White et al. (2023), Journal of Fish Biology, CC BY-NC-ND 4.0
After discovering bizarre egg cases in a museum collection that led them to an unknown species of deepwater catshark, researchers have made a ground-breaking discovery. The eggs were determined to be from the Apristurus ovicorrugatus species, which was previously mistaken for Apristurus sinesis due to its milky white eyes.
 

Uncovering the mysterious deepwater catshark

The Western Australia Museum and the Australian National Fish Collection from the Commonwealth Scientific and Industrial Research Organisation (CSIRO) both have collections of fish samples where the egg cases were discovered. The strange, rigid structure of the egg cases fascinated the scientists. They discovered that the unidentified samples matched those of an in-storage deceased, pregnant female shark specimen with identical eggs. The specimen was taken from water more than 1,800 feet (550 meters) deep off the coast of northwest Australia.

 
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