Those look like highland giants to me as well, albeit with superb patterns. I think the first one being that thick is normal, we don't see pictures of most goonch cats from above like that. Everyone wants to take pictures from the side or of the mouth so that's an unusual angle. Highland giants are typically very wide bodied fish, but when we're used to seeing pictures of them from the side instead of above, it's easy to forget that they're dorsolaterally compressed- that means that they're squished from the top down. This is and adaption to living in the fast running waters from which they come and which B. suchus takes to the extreme. The location from which it was captured is also telling.
I was just making a hypothesis that the first pic could be rutilus because of the red on the fins, but honestly with the pics and capture point I knew it wouldnt fit. Unless the pic was taken from SE Asia. I do agree the others look like highlands giants.


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