The Phalloceros reisi lives in the benthopelagic, freshwater environment.
Phalloceros reisi can be distinguished from its congeners but P. megapolos, P. spiloura, P. malabarbai, P. alessandrae, P. buckupi, P. uai, P. lucenorum, P. pellos, and P. anisophallos by (1) the female urogenital papilla curved to the right, located laterally (vs. More