Author: Potter, 1968
FBname: Non-parasitic lamprey
Remark: No study has specifically described ammocoetes of this species. Based on the
  general statement in Potter (1968) and Potter et al. (1968) that ammocoetes of <i>M. mordax</i> are indistinguishable from those of <i>M. praecox</i>, the reader is advised to refer to the description of ammocoetes of <i>M. mordax </i>(Ref. 89241).
Comments: Inhabits freshwater streams, a non-parasitic lamprey that spends its entire life cycle in freshwater.  Ammocoetes burrow in soft substrates, phase lasts about 3 years; metamorphosis usually occurs between October and November.  Presumed to migrate upstream around April, and spawns in late winter or spring (Ref. 44894).  Fecundity, 326-675
  eggs/female (Ref. 89241).