yes they did discover the blue catfish
Thousands world wide with new species being discovered all the time.
It's impossible to know, because they hadn't been discovered, so nobody had seen them.
There are so many species of catfish in the Amazon, some yet to be discovered, this question cannot be answered.
channel cat fish, which is the most common, blue catfish. flathead catfish,yellow bull head, theres way more than six, there's also forktail catfish, bull head, great blue catfish and many more
A male catfish
There are many fish in the catfish family, but here is a list of selected common species; Blue catfish-Ictalurus Furcatatus, Channel catfish-Ictalurus Punctatus, White catfish-Ameiurus Catus, Flathead Catfish-Pylodictis Olivaris.
Catfish can swim. Some Amazonian catfish can eat people
Catfish can swim. Some Amazonian catfish can eat people
a goonch catfish has teeth and a piraiba catfish doesn't but it has a surated mouth.
The catfish that I have caught and cleaned do not have teeth.... These are fresh water catfish.....
catfish are carnivores