Note that the placement of Nimbapanchax in Callopanchini is at best very very tentative and based on a hunch and not any real phylogenetic work. Do not regard this as authoritative! I'm just not sure where else to put it. Arguably it may belong in Epiplateini or perhaps even a triba of its own.
That is Nimbapanchax is in a sense an intermediate between and the "Roloffias". The similarity was so great "Roloffia maeseni" turned out to have an Epiplatys in the specimen jar, so Epiplatys maeseni is a real fish but the "Roloffia" that was using it's name has been renamed as Nimbapanchax leucopterygius.
Nimbapanchax melanopterygius, occurring in mountains nimbus in northeastern Guinea. This is a new species.
Also viridis, jeanpoli and petersi have also been moved to Nimbapanchax
Here's the key to Nimbapanchax from Sonnenberg's description of the Genus:
Key to Archiaphyosemion and Nimbapanchax species based on external morphological and live color
pattern characters.
1. Males with alternating dark and light stripes on caudal fin; 11–12 transverse scales; 15–17 circumpeduncular scales;
30–34 lateral line scales; frontal squamation E-type ....................................................... Archiaphyosemion guineense
- Males with dark blotches or dots on caudal fin; 8–10 transverse scales; 12–14 circumpeduncular scales; 27–30 lateral
line scales; frontal squamation usually G-type ...................................................................................................... 2
2. Males sometimes with yellowish marginal or submarginal zone on anal and lower caudal fin, no white margin;
females with brown, broad, wide-spaced bars on side; 8–9 transverse scales; 12 circumpeduncular scales .................
.................................................................................................................................................... Nimbapanchax petersi
- Males with white or light blue margin around caudal fin, sometimes not closed; females without or with smaller
spaced brown bars on side; 9–10 transverse scales; 13–14 circumpeduncular scales .................................................. 3
3. Males brown on side, center of many scales with metalic blue-green, little red pigmentation on side; dark brown or
reddish blotch laterally above insertion of pectoral fin in females ............................................................................... 4
- Males metalic blue-green on side with only small brownish scale margins; no or only small brown or reddish blotch
laterally above insertion of pectoral fin in females....................................................................................................... 5
4. Males with white or light blue margin and dark brown or red submarginal stripe on anal fin; unpaired fins in males
with small brown dots on blue-greenish center; juvenile males and females laterally with bars ...................................
....................................................................................................................................... Nimbapanchax leucopterygius
- Males with black or dark brown margin and often white submarginal stripe on anal fin; anal and caudal fin with
brown or reddish-brown irregular blotches on blue-green center; no bars on side of males and only sometimes in
frightened females....................................................................................................... Nimbapanchax melanopterygius
5 Males with lateral irregular distributed red dots on scales sometimes forming regular lines .....Nimbapanchax viridis
- Males with lateral broad dark brown or red-brown bars or blotches at or slightly above body midline............ Nimbapanchax
jeanpoli
