After original description.
(Replace L. and Lamprologus by N. and Neolamprologus)
Lamprologus buescheri n. sp. from Zambian part of lake Tanganyika
Abstract : An undescribed species of the genus Lamprologus was found in lake Tanganyika in a depht of 18 m. The most important features of L. buescheri n. sp. are its moderate size, its slender, elongate body, its deeply forked caudal fin and the specific colouration.
To date, the African cichlid genus Lamprologus Schilthuis 1891 comprises
49 species and subspecies. Fife of them have been recorded for the Zaïre
river system. All the other species are endemic to lake Tanganyika. The
new fish described in the present paper was discovered in August 1982 in
the Zambian part of lake Tanganyika when Büscher (Pratteln/Switzerland)
made several dives with scuba gear to explore the habitats along the south
western coastline of the lake.
lamprologus buescheri n. sp.
Holotype (measurements in mm) : ... TL 69.3, SL 54.5 ; Cape Kachese, Lake Tanganyika, approx. 08°29'S - 30°27'E, leg. H. Büscher, VIII.1982.
Etymology : The fish is named in honour of Heinz H. Büscher, first collector of this species in lake Tanganyika.
Diagnosis : Lamprologus buescheri n. sp. is a small, elongate bodied species (maximum depth of body 4·36 time in the standard length). The combination of its moderate size, its lunate caudal fin and its whitish body coloration, which is patterned with two black horizontal stripes, one dorsal, one midlateral distinguishes it from all the other lamprologus species. Adult specimens probably do not exceed a TL of 80 or 90 mm.
Head and body elongate, slender and slightly compressed laterally. Depth
of body 22·94%, length of head 34·68% of SL.
As for the time being there has been available only one preserved specimen of this species, it was not thought advisable to make an examination of the internal characteristics.
Colouration : Body colour of the live fish whitish, with two black horizontal stripes on each side of the body, one dorsal, along the base of the dosal fin, the other midlateral, from the end of snout to the base of caudal fin. Dorsal stripe with a row of three or four white spots just below the base og the dorsal fin. Both upper and lower half of iris edged with yellow. Pectoral transparent. Other fins dusky gray. Dorsal with conspicuous broad black submarginal longitudinal band. Similar bands in the anal and caudal both the upper and lower half of caudal less conspicuous. Pelvics, dorsal, anal and caudal with narrow brigth blue margin ... No obvious sexual dimorphisme or dichromatism apparent ...
In preserved specimens the colour tends to become brownish, but the distinct black margin remain.
Distribution : Endemic to lake Tanganyika where it is kinown only from the type locality, Cape Kachese in Zambia.
Habitat : Field observations with scuba gear (Büscher 1983) proved that L. buescheri n. sp. only occurs among rocks and stones in the littoralregion of the lake ... The fish seldom strays more than a few centimeters from the substratum, but always moves in close contact with the rocks with the rocks and immediately withdraws into crevices when disturbed. It was only found at depths between 16 - 18 meters. In its habitat buescheri co-exists with Lamprologus pucher Trewavas & Poll 1952, L. savoryi Poll 1949, Julidochromis regani Poll 1942 and Telmatochromis vittatus Boulenger 1898. L. buescheri is a strictly territorial species, wich for the most part is distributed in single individuals over its habitat.
Reproductive behaviour : L. buescheri is a typical cave spawner with firm pair-bonding. Reproduction has been observed in an aquarium where the ♀ laid about 20 eggs, wich were deposited on the roof of an inverted coconut shell. Both sexes take part in the defense of the territory, but only the ♀ guarded the eggs and the fry in the cave. At a temperature of 27°C the eggs hatched after 48 hours. Within about 8 days from the hatching the absorption of the yolk was complete and the fry swam independently.
Affinities : In general appearance Lamprologus buescheri closely
resembles L. fasciatus Boulenger 1898, but its moderate size, its lunate
caudal fin and its colouration distinguish it clearly from that species.
In addition to the above characters it differs from fasciatus by
its fewer anal rays (buescheri VI/7 vs. fasciatus X/7) and
its fewer gill-rakers on the lower part of anterior arch (9 vs. 11-12).
Büscher, H.H. (1983): Der Spinel-Barsch, eine neue Cichlidenart aus
Tanganjikasee.— Das Aquarium, 17 (8): in print ; Minden.
Author: Dr. Wolfgang Staerck, Beymestr. 8, D-1000 Berlin 41.
Destination LAC TANGANYIKA/Estelle & Benoit//2001-2012.