In what feels like a lifetime ago, my hobby and science curiosity began by the sight of a little catfish rolling its eye. Soon to be known as a Corydoras, this catfish caught my interest as it was making its whiskered way around inside a friend’s aquarium. As a boy, most of my friends were keen anglers but my interest was only for colours and scale patterns of native fishes. Perhaps this partly has more to do with the fact I am, self-confessed, ‘The World’s Worst Angler’ and why I became a ‘fishkeeper’. In time, I learned there were very …