“freshwater fish”
Who knew stingrays were a freshwater fish? If a shark or porpoise wanders up an estuary do they suddenly become “freshwater fish” too?
Only if they get far enough past the estuary to get in fresh water.
—”Who knew stingrays were a freshwater fish? “
“Most stingrays live in coastal saltwater environments rather than the open ocean, said Stephen Kajiura, professor of biology at Florida Atlantic University. However, there is one species of stingray that lives in open ocean waters, called the pelagic stingray...
How long stingrays live varies greatly by species, Kajiura said. Many live much shorter lives, closer to 6-8 years. Some larger freshwater species, like the giant freshwater stingrays of Southeast Asia, may live 25 years or longer, but scientists don’t know for sure, he said. In general, scientists are most familiar with the life cycles of commercially important fish, but because stingrays aren’t heavily fished, the lifespan of many species remains unknown, he said.”
https://www.livescience.com/what-are-stingrays.html
China used to have pink river dolphins. Then the rivers became too polluted and they went extinct, very recently. But hey, we have to get our cheap sh!t from somewhere, don’t we?
Good question, there are bull sharks in Lake Nicaragua.