The Phalloceros enneaktinos lives in the pelagic, freshwater environment.
Phalloceros enneaktinos can be distinguished from its congeners by the possession of nine dorsal-fin rays (vs. eight, very rarely nine in P. mikrommatos, P. caudimaculatus, P. elachistos, P. titthos, P. harpagos, P. spiloura, and P. reisi). Description. More