19" do you have a piccy?If you want big fish you'll need a big tank.
My largest fish is a 10inch long common pleco. My second largest fish is a common goldfish which is around 7-8inches long now.
Goldfish are awesome. I went fish shocking one time in the Potomac River (in Virginia) and we caught a 18" goldfish! It was huge! I guess someone had dumped their tank in the river and the fish just like the type of water.
But my biggest fish is a 5" silver dollarr. But I want to eventually have a 3' Arowana!
. Originally i adopted the common goldfish with a comet goldfish last year off a guy who got bored of them at only 3inches long (the comet is only a little bit smaller than the common goldfish), their growth was a bit stunted but they are growing really well now since they've been in my care now they're in the right sized tank setup
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hes lovely 