Ompok Bimaculatus.

I see that this catfish is related to the wels catfish, so does it develop the same dark color?
***Color varies. There is some confusion with the ID of Ompoks, so to err on a safe side IDK how dark O. bimaculatus gets.

I read trough the Planetcatfish profile, and Seriuoslyfish, and the pictures where very different, have Seriouslyfish posted the wrong pictures?
*** Balaji is an expert (see below). You can ask him. I have not checked but if what you say is true, it is probably ID woes.

I know that one of the Ompok catfish species, are also known as "Gulper Catfish" is it this one?
*** AFAIK, they are all called gulper catfish. It's a common name for this genus.

Does anyone have some personal expirience with these guys? If so, how big did they get? How active are they? How aggressive are they?
*** See below.

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There have been several good threads in the last 1-2 years on Ompoks. If you search this forum, you will find them.

My standard answer is that it appears bimaculatus does not enter the trade, according to our in-house Indian catfish aficionado and expert Shovelnose (Balaji on PCF) anyway. The shipping occurs from central-northern India, where there is plenty of the very similar O. siluroides. No sense in getting more expensive bimaculatus from south India.

I've had siluroides and padba.

http://www.planetcatfish.com/forum/viewtopic.php?f=13&t=39081&hilit=+siluroides

http://www.planetcatfish.com/forum/viewtopic.php?f=13&t=30937&hilit=+siluroides

http://www.planetcatfish.com/forum/viewtopic.php?f=13&t=30936&hilit=+ompok

http://www.planetcatfish.com/forum/viewtopic.php?f=9&t=36636&hilit=+siluroides

Hey, Karl, if you read the old link, it says Ompok siluroides, twice

My only pabda is in the first link. I had three siluroides, two normal colored and one amelanistic.

"Silurus" is Dr. Heok Hee Ng, one of the world's leading catfish taxonomists and the leading taxonomist on Asian catfishes, IMHO. Anyone who reads sci papers knows this name

Right. IDK what happened to the link. It leads to the genus, not species anymore.

Exactly. I could not see the normal colored ones in a dark 1500 gal pond, only the white one. They are markedly nocturnal in a natural pond. In a dim tank, however, I saw them rather often.

Last time I pumped the pond down, I did not find him, so now, I am sadly Ompokless. Pretty sure my smaller jau 1.5'-2' had eaten him and a couple of others before I corrected the situation.

About a foot, TL.