Posted: Tue Feb 16, 2010 9:30 pm
It's canned tuna, but if you want to splurge and buy some tuna fillet, that would work as well.
Just make sure the canned tuna is "solid albacore in water" and not in oil. Solid cause you don't want it falling apart and make a mess of the tank, and in water cause you obviously don't want oil in your water.