PRJNA12928
A warm-water flagellate; parasite of fish
<i>Spironucleus vortens</i> is a free living organism although it is also known as a fish parasite and the putative cause of hole-in-the-head disease of freshwater aquarium fish. <i>Spironucleus vortens</i> is another single-celled basal eukaryote like <i>Giardia</i> whose sequence can provide information on eukaryotic evolution.