Yeah, the biggest one I ever caught was a tad over 11 inches. Thought it was a bass at first, but quickly realized once I got it on the bank that it was an impressive Creek chub. Wish I had a pic of it. But it was used a Flathead bait later that night.
It's a 180 gallon tank. Filtration is a 29 gallon sump with DIY overflow and 800gph pump. Pump is going to be upgraded to a 160gph. Substrate is a sand gravel mix I collected. Plants are watercress and Vallisneria. Rocks and driftwood were collected myself. Lighting is two 4 foot dual t8 shop...
I have kept 6 of them in a planted 10 gallon without any issues. They even spawned. I fed them frozen bloodworms and live mosquito larva and daphnia.
You can find them on Aqua Bid from time to time. Or can order them from Sachs Aquaculture http://www.aquaculturestore.com/Bluefin-Killi.html