An Australian freshwater Murray cod has surprised scientists by swimming a marathon 530 miles along a major river system, believed to be a record for the species. The fish, named Arnie after Australia’s recently retired Olympic champion Ariarne Titmus, was first tagged in early 2022 in Mullaroo Creek, about a 13-hour drive west of Sydney, said Arthur Rylah Institute researcher …
Read More »A freshwater fish named Arnie just swam a record 530 miles, mostly upstream, Australian scientists say
