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Sold as a "yellow" S. shoutendeni. Looking through the Cat-E Log I see nothing that looks exactly right. Any ideas?

he is beautiful! can i try to guess?

I think either Synodontis schoutedeni or Synodontis aterrimus or Synodontis koensis.

But I am new to catfish.

It looks like a very yellow .

Hi,

I would agree with your ID Silurus..Synodontis waterlotti

Regards

Chris

Nice fish, looks just like the waterlotti I had many years ago.

Mark

Thanks for all of the responses. So does anyone know what exactly causes the dark yellow coloration?

Probably a combination of diet and substrate.

Well, I bought him a couple months ago with that coloration (very different, darker substrate) and it hasn't changed at all. The one still at our LFS has pretty much exactly the same coloration as well. And our LFS uses different foods than we do. It makes me wonder if there is some other factor involved.

Regional variation within the species might contribute to a different appearance.

I have three S.Waterloti which are roughly between 5 and 7 inches ? i seem to remember them beig lighter in colour when younger i.e. yellowish , they are now much darker , a kind of brownish base with blackish marbled lines , Waterloti are i m o one of the most beautiful of the Syno group , not so much for their colour , but their wonderful streamlined , but also well built body structure

I agree that they are S. waterloti, although there is at least two 'forms' of it at the moment, the one with more of a yellow background with brownish marks, then yours with more of a greenish yellow and darker marks.