My first tank was a cast-off from Woolworth's in downtown Chicago, sold to me by a LFS (I'd very much like to see the place again, but it's too dangerous of a locale right now). The tank was an early design (1960ish I think) composed of glass plates held together by pitch, a steel support frame and a slate bottom, which I didn't understand at the time. I wish that I hadn't let it get away. At 30g it would have made a good QT. The brits and German's have played a huge role in advancing the hobby.
Our era of fish keeping started with electricity becoming an increasingly common resource after WWI. The idea of keeping fish in general may have started as far back as the Roman era, though that's subject to some disagreement.
Thanks to Avel1896, for sparking historical interest in a hobby I've spent so much time and money chasing.