Surely you were on the right venue at the right time you can only catch what is in the water you are fishing.
Plus, when it comes to North Indian mahseer, tinker, a large slice of Golden Balls luck, for with these fish, right time, right place, right gear and lures simply aren't enough - they might be present but just not "eating", or absent from the piece of water concerned, having just "gone", yet to arrive in it, or be just missing from many miles of river whereabouts unknown. Not easy fish, as many of the guys who fished for the more dependable, amenable and stay at home, South Indian mahseer species, then went North expecting to repeat their success have discovered over the past twenty or so years, in spite of my personally gently warning a number of them when they had contacted me for advice before they left: "My advice to you is to think as I have long done when going off to fish north India - expect to blank horribly, with any fish, however few and non-Mighty, that confound that expectation and throw themselves at your lures turning the trip into a near-miracle triumph.". Thought me a hard-bitten Gloomster trying to put them off or down, they did. They learned!
PS - I was telephoned yesterday evening (Monday) by one of those guys, a man I haven't seen or heard from since the very late 1990s, one of the better sorts among the new, ambitious mahseer men, saying "Hi, Paul ... yaketty yak, ya da ya da ... did you see Burma on the television the other night? ... forests and wildlife still in tact ... must be mahseer in the more remote rivers....".
I was as always positive but realistic - "Sure to be, but the northern and western tribal people make Indian commercial fishers look rank amateurs, having well-contructed and perfectly located, fixed seasonal fish traps in addition to the usual nets etc. Bear in mind also that the old Burma Hand I knew in the early 1980s, a man who had retired to Cheltenham after thirty years in pre-Independence Burma (timber then oil), a very keen mahseer fisher, told me that he would sometimes catch well at the tail-end of the monsoon but that this would involve being badly "leached up" in the rank forests and on the heavily grown banks, or not all. And that the blue-skies, dry-season springs could be good, every other year or so. Or not. I reckon that Burma could just be a remake of that North India movie classic, Mahseer Nightmare!"
My caller saw the funny side. Others, over the past twenty-odd years, have not, blaming me for their non-catching. Takes all sorts.