Leptacanthichthys gracilispinis, the Plainchin dreamarm, is a species of dreamer found in the northern oceans at depths of around occasionally as deep as . Females of this species grow to a length of SL while the parasitic males grow only to as long as SL. This species is the only known member of its genus. References Oneirodidae Taxa named by Charles Tate Regan Fish described in 1925