The genus Fenneralpheus Felder and Manning, 1986
The genus Fenneralpheus contains two species, one of them still awaiting formal description.
Fenneralpheus may be separated from other alpheid genera by the combination of following characters:
Fenneralpheus is presently known only from the western Atlantic, being most closely related to Leptalpheus s. lat., differing from this genus mainly by the anteriorly produced pterygostomial angle and the more robust chelipeds, with fingers bearing a very peculiar armature consisting of teeth arranged as rounded, cuspate, obliquely oriented ridges.