Rhamphochromis sp. 'longiceps yellowbelly' Senga Bay
Genus:
Rhamphochromis
Geographic distribution:
Collected mainly from the southern part of Lake Malawi,
particularly around Salima; additional specimen
recorded from Makanjila.
Typical adult size:
Reaches just over 200 mm standard length
(approximately 25 cm total length).
Sexual dimorphism:
Adult males develop orange pelvic and anal fins. In full
breeding dress males lose countershading and become
dark grey overall, with orange tinting on the throat
membrane, underside of the body, lower half of the
caudal fin and across the dorsal fin. Females remain
silvery.
Diet:
Piscivorous.
Special notes:
Undescribed and uncommon taxon closely related to
R. longiceps, but distinguished by male
breeding coloration. Very slender and streamlined
compared with other small-maturing species, and the
only known small-maturing form in which males become
uniformly dark grey in breeding condition.
Molecular analyses have placed it in a basal position
within Rhamphochromis, though available
genetic material is limited. Additional sampling has
been constrained, and its phylogenetic placement
remains based on a small number of sequences.
Molecular analyses have placed it in a basal position within Rhamphochromis, though available genetic material is limited. Additional sampling has been constrained, and its phylogenetic placement remains based on a small number of sequences.
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