DesDescriptioncription
Review of the Nothobranchius ugandensis species group from the
inland plateau of eastern Africa with descriptions of six new
species (Teleostei: Nothobranchiidae). Ichthyol. Explor.
Freshwaters, 30 (1): 36, figs. 7-8.
Abstract:
Review of the Nothobranchius ugandensis species group
from the inland plateau of eastern Africa
with descriptions of six new species
(Teleostei: Nothobranchiidae)
Béla Nagy, Brian R. Watters, Pieter D. W. van der Merwe, Fenton P.
D. Cotterill and Dirk U. Bellstedt
The Nothobranchius ugandensis species group from the inland
plateau of Kenya, Tanzania and Uganda is reviewed.
Members of this group are characterized in males by the
combination of characters of a light blue body coloration
with red to red-brown scale margins; a frontal part of head red-
brown; throat light blue or red; a uniform red or
yellow caudal fin; and a light blue or yellow anal fin with red-brown
spotted pattern. Six new species are identified, to raise total
species richness to eleven. Nothobranchius albertinensis, Nagy,
Watters & Bellstedt, new species,
from the Albert Nile drainage in western and north-western
Uganda, is characterized by a yellow dorsal fin
with stripes in medial part parallel to fin rays; yellow anal fin
without markings; and anal fin positioned anterior
to dorsal fin. Nothobranchius attenboroughi Nagy, Watters &
Bellstedt, new species, from the Grumeti and other
lesser systems east of Lake Victoria in northern Tanzania, is
characterized by a light blue anal fin with red-brown
dots proximally and medially, and becoming yellow distally with
narrow red-brown stripes parallel to fin rays.
Nothobranchius hoermanni Nagy, Watters & Bellstedt, new
species, from the upper Wembere drainage in central
Tanzania, is characterized by a red throat; light blue anal fin with
red-brown spots and stripes proximally and
medially, and with a broad light blue distal zone without markings;
pectoral fin hyaline with red-brown stripes
parallel to fin rays; and exposed branchiostegal membrane red-
brown, with cream distal margin. Nothobranchius
itigiensis Nagy, Watters & Bellstedt, new species, from the
uppermost Ruaha drainage and the Bahi Swamp area
in central Tanzania, is characterized by a yellow anal fin with red-
brown spots proximally, that merge medially
to a pattern parallel to fin rays and are fused distally to form a
marginal band. Nothobranchius moameensis Nagy,
Watters & Bellstedt, new species, from the Moame system south of
Lake Victoria in northern Tanzania, is characterized by a light blue
anal fin with red-brown dots proximally and medially, and with
light blue or yellow distal
zone without markings. Nothobranchius venustus Nagy, Watters &
Bellstedt, new species, from lesser systems in
south-western Lake Victoria basin in north-western Tanzania, is
characterized by a dorsal fin with a narrow light
blue subdistal band and a narrow red-brown to black distal band; a
light blue anal fin with irregular red-brown
stripes perpendicular to fin rays proximally and medially, and
orange with red-brown stripes parallel to fin rays
in distal zone. The species group on the inland plateau in eastern
Africa also includes N. derhami, N. kardashevi,
N. streltsovi, N. torgashevi and N. ugandensis; furthermore N.
nubaensis from southern Sudan and western Ethiopia
is also included. Phylogenetic analysis of the sequences of their
mitochondrial ND2 and COI, and nuclear Glyt,
MyH6 and SNX33 gene sequences supports the genetic distinction
of the six new species and confirms their position, together with
all known members in the N. ugandensis species group
Clasification
Genus: Nothobranchius
Subgenus: Zonothobranchius.
Group: ugandensis
Geographical Distribution
Maps
Tanzania
Type locality: 56 km west Ikoma Gate towards Bunda, 7 km west Nata,
Grumeti system, lake Victoria basin, 02°00'41" S, 34°23'47" E
Others places:
-Ikizu, 25 km N.W. Ikoma (Serengeti), Tanzania [1.916 S : 34.051 E]
-2 km E. Mugeta, Tanzania [1.946 S : 34.237 E] Nagy et al., 2019
-500m W. Mugeta (TAN93/17), Tanzania [1.951 S : 34.183 E] Watters et
al., 1993 | Huber, 1996a
- 7 km E. Mugeta, Tanzania [1.968 S : 34.293 E] Hengstler & Heng.,
2015 | Nagy et al., 2020
Extension:known only from type area. small systems draining into lake
Victoria (East side of lake)
Locations/codes
Nata (TAN 93-4)
Nata (TAN 93-3)
Mugeta TAN 93-17
Motukeri (TAN 00-1)
Nata TAN 00-2
Mugeta K11-18
Nata (TZHW 15-06)
Mugeta TAN 17-13
Nata (TAN 17-15)
Mugeta (TZHK 18-13)
Mugeta TZN 19-15
Notes
Status specie: unconfirmed by several authors
In captivity :Standard conditions.
Bibliography
Related
Rosenstock, J. 1989. Nothos I have known. Journal of the American Killifish
Association (J. Amer. Killifish Assoc., JAKA), 22 (3): 85-92. [attenboroughi N.:
Sys/Pat/as sp. Mugeta]