"pb" wrote in message
.com...
In article ,
says...

snip
Kindly assume that I do have more than a vague idea of keeping fish.


Relax, it isn't worth getting steamed up about. It should be obvious from
your opponent's remarks about nets and tanks that he realises full well what
might have happened to the siblings of the 'mystery fish', in the absence of
such precautions. So, in a way, he is making your point (that there being
only one known survivor doesn't necessarily imply it wasn't bred there) for
you.