After the Greek melanos meaning black (the margin on the anal fin) & pterygion meaning fin or wing.

Holotype - Male 42·9mm (SL).

Holotype - D=13, A=16, D/A=6, ll=28+3
Paratypes Male - D=12.1, A=15.3, D/A=6.1, ll=28.3+3.3
Paratypes Female - D=12.5, A=15.5, D/A=6.4, ll=28.5+3.4

A.aff.maeseni Behple (?)

Populations

• GF06 / 1
• GF06 / 2

GF 06 / 2. A small puddle on the bank of the Cavally River near a natural granitic bridge.

Currently limited to collection codes GF 06 / 1 & 2, Mount Nimba area.

Collected in a small puddle on a river bank. The Cavally River flows with a strong current between boulders with a depth up to 1metre. Water temperature in puddle was 24°C. At the 2nd locality they were found in a small, slow flowing creek with a maximum water depth of 60cm & a water temperature of 25°C. Water was stained slightly brown. The creek was covered by small trees with vegetation growing on river banks.

The holotype was collected by E.Busch & B.Weise on 15th May 2006 at GF 06 / 2, Cavally River, southeastern Guinea.
Paratypes collected at GF 06 / 1, near Kementa, southeastern Guinea in the Konkere River on 15th May 2006.

A fish was in circulation called A.aff.maeseni Behple (Wildekamp 1993), collected in northeastern Liberia on the road between Tapeta & Juarzon (Etzel 2006). Also called A.sp. from near Behple (Etzel 2006), A.maeseni from Beple (Seegers 1997). These seem to differ from melanopterygius as having more bluish colouration on sides & fins, a black margin in anal fins.(Sonnenberg 2009)