The question you have to ask is, if its purely down to low water, the fish will still be some where, still out at sea,in the historical low water beats, or trapped part way in their journey.Then when the water arrives, its fish soup as they bolt for the spawning beds.Dont think thats been the case over the past few few seasons! and if they don't run the rivers-where do they go?,they'll have to go somewhere, they won't turn round and come back next year.Certainly not seen evidence of that at all-imagine the size of them if they did!.
They're not coming because they're not there to come, simple as.I for one have a guess or so as to why, but to be honest I don't exactly know the true reason.
Sad indeed, but there you go,Pedro.
I think my point is that (maybe) after a number of seasons of very low/unreliable water, the fish have decided not to be as active on the spawning beds, meaning less fish. If they can't rely on water at the right time, maybe this is a natural reaction to poor running conditions? In other words, evolution of sorts.
When/if we get more reliable conditions, maybe they will naturally return to 'recolonise' (for want of a better word)?
Transferring it to humans, if I spent three years going to Barbados and each year it was ****, I wouldn't go again the next year!
You can probably tell I am no scientist, and my argument could well be (and probably is) fatally flawed!