Pile or musky pond Melb aus

[Frctcih]

i really like large predatory fish that can live in coldwater problem is murray cods are the only coldwater fish native to Aus that are big. but I was wondering if anyone new where I could obtain either a musky pike goonch or wels pls tell if you have any info also if you know any other large coldwater species for sale in Melbourne Aus or able to be imported to Melbourne do tell. Also I'm taking about either dwarf or bagerius yarelli for the goonch