Sexing Whiptail Catfish - Sturisoma Aureum

[RobW]

Hi All,
We purchased a pair of Whiptails over the weekend and after a long time in the shop trying to get a pair we took two we thought were male and female to see how we get on. Now they’re settled on the table we’re trying to decide for definite whether we were successful, or whether we should swap one. I’ve attached some pictures of them individually to aid sexing.
Any help would be much appreciated!

 

[Autumnsky]

Although I do not have a definitive answer, female catfish are broader across the chest, and males are narrow.