Pictured above are four of the Xenopus Species: Xenopus tropicalis;
Xenopus muelleri; Xenopus borealis; Xenopus wittei.
There are many other species of Xenopus including: X. clivi, X. gilli,
X. vestitus, X.laevis. There are others but I'm not sure of all of them.
There are only slight colour, size or shape differences between the species.
The Scientific Classification of the African Clawed Frog is:
Kingdom: Animalia
Phylum: Chordata
Class: Lissamphibia
Order: Anura
Family: Pipidae
Genus: Xenopus
Species: laevis, borealis etc.
Full List of Xenopus Sub-species:
Xenopus amieti
Xenopus andrei
Xenopus borealis
Xenopus boumbaensis
Xenopus clivii
Xenopus fraseri
Xenopus gilli
Xenopus laevis
Xenopus largeni
Xenopus longipes
Xenopus muelleri
Xenopus pygmaeus
Xenopus ruwenzoriensis
Xenopus vestitus
Xenopus wittei