I think a Fire Eel would be sweet. I don't know if your tank is to small though.
10 Gallon Nano Tank
I currently have eight 1/2" red wag platies for
sale. My aquarium is overstocked and I need to get
Selling BEAMWORKS 48" (4 feet) high power LED
lamp. Comes with two modes, 1) white and blue 2)