Thank you all for the information

Thorsten

@Chrisyhthys
Thank you for the first information, but my catfish are between, the smaller one 17 cm the greater one is about 22 cm.
I think this is too much for S. robbiana.
In fact of this, I think it`s S. nigrita or posssibly S.eupterus

Please send me more opinions

Greets Thorsten

Hello, I need help, my wife bought some catfish and she doesn`t know them surely.
Is this a S. nigrita?







Pleas answer soon if possible
Thank you
Thorsten