this is a fascinating fish the coelacanth . Discovered mid 20th century by scientists, it's an evolutionary blip that didn't quite make it to the shore millions of years ago but still retains elements of the developing limbs needed.
a real mystery, and a bit of a classic.
You can't catch one alive, they need deep sea water pressure, it's possibly the oldest living animal.
i had a dream once about a man who claimed he was a descendant of the only coelacanth that made it.