[7]A. finegoldii is a gram negative straight rod shaped bacterium commonly found in the human gut biome that grows anaerobically.[8] The general size ranges from .8 to 2 micrometers in length with rounded ends.
^Mavromatis, K., Stackebrandt, E., Munk, C., Lapidus, A., Nolan, M., Lucas, S., ... & Woyke, T. (2013). Complete genome sequence of the bile-resistant pigment-producing anaerobe Alistipes finegoldii type strain (AHN2437 T). Standards in genomic sciences, 8, 26-36.