Nannocharax signifer

Nannocharax signifer, is newly described species of African darter fish, discovered by Museum scientists, in the Ouémé River basin, Benin, West Africa

Nannocharax signifer is distinguishable from all other Nannocharax species in West Africa by the red-orange colouration on the anterior half of the dorsal fin. 

Nannocharax signifer is one of 29 known Nannocharax species 

  • 8 of which are from West Africa

Only one other Nannocharax species, Nannocharax  occidentalis has been found in the Ouémé River basin.

Species detail

Other characteristics that distinguished Nannocharax signifer from other Nannocharax species

  • no continuous black band along the flank
  • multiple x-shaped body colour pattern extending on the lower half of the flank
  • presence of a large, dark, rounded spot from the posterior portion of the caudal peduncle to the basal portions of the middle caudal-fin rays
  • 46-48 (usually 47) lateral line scales
  • 4-5 scales between anus and origin of anal fin
  • Nannocharax signifer
    Taxonomy

    Learn the general characteristics of Nannocharax signifer in comparison to other African darter fish relatives and discover the origin of its name.

  • Nannocharax signifer
    Diagnostic description

    Find a more in-depth description of the appearance of Nannocharax signifer including how it differs from other African darter fish.

  • Distribution map of Nannocharax signifer
    Habitat and distribution

    Nannocharax signifer was discovered in the Ouémé basin, Benin, West Africa. Find out more about the three localities in the Ouémé basin where it was found.

  • Nannocharax signifer
    References

    Find out more about Nannocharax signifer, the using the reference information.

Images

Nannocharax signifer

Nannocharax signifer, a newly discovered species of African darter from Benin, West Africa found in the Hlan River east of Zogbodome. 

© T Moritz
Nannocharax signifer

Nannocharax signifer

© T Moritz
Nannocharax signifer

Nannocharax signifer

Nannocharax signifer,

Nannocharax signifer

© T Moritz