Could not agree more. Then eradicate the crap in Tassie.
Re the Murray/Darling system; I remember that in 1972 at the Barwon River in Collarenerbri, one could easily dip an ordinary landing net and catch as many as 200 3 to 4 inch mudsuckers. The water was clear in those days, today it is long stretch of muddy pools. Indeed, in the late 1800s, paddle steamers regularly plied the river. No more, I am sad to say, due to bank erosion and redgums toppling into the river from all the mud sucking verminous crap.