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Lake Tanganyika cichlids — species, locations & maps

Lake Tanganyika cichlids — species, locations & maps
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Neolamprologus cf. ventralis 'Lwili Island'.jpg Neolamprologus ventralis 'Magara'.jpg Neolamprologus ventralis 'Mahale Mountains NP'.jpg Neolamprologus cf. ventralis 'Mvuna Island'.jpg Neolamprologus ventralis 'Nyaruhongoka'.jpg
Previous pageNext pageNeolamprologus ventralis 'Mahale Mountains NP'
Tribe / Genus: Lamprologini / Neolamprologus
Type locality: Near Siedlung Tembwe, 7°10'S, 30°00'E, ca. 40 km south of Moba, Lake Tanganyika, 38 m.
Biotope: Occurs only in deeper water, typically from 20 to 60 m (possibly deeper), in the so-called intermediate habitat.
This habitat is formed where a sandy or muddy bottom meets small to large rocks and stones that create caves and crevices.
Geographic distribution: Endemic to Lake Tanganyika. Reported irregularly around the shoreline wherever suitable intermediate habitat is present.
Typical adult size: Males are reported to reach up to 10 cm, with females typically 1–2 cm smaller.
Maximum size is also reported as about 80 mm for both sexes, with the possibility of somewhat larger individuals in captivity.
Sexual dimorphism: Females are commonly smaller than males by about 1–2 cm.
Some observations report similar size and coloration in both sexes at certain localities, while at other localities males may be slightly larger and more colorful.
Recommended aquarium size: 240 L
Aquarium setup: Provide heavy rockwork to create many caves and passageways, with a fine sand substrate.
Due to strong intolerance toward conspecifics, keep only as a pair. In a sufficiently large aquarium, it may be kept with other suitably large Lake Tanganyika cichlids, but the pair will defend a territory vigorously.
As a deepwater species, it is best kept under relatively subdued lighting. Hard, alkaline water is recommended, with slightly cooler temperatures reported at 23–25 °C.
Diet: Omnivorous. Reported foods include algae, copepods and other small crustaceans, aquatic insect larvae, detritus, sand, mollusks, and fish fragments or small fish (fry).
Breeding: Cave substrate spawner. Spawns are small, typically with fewer than 40 fry per spawning.
No distinct spawning season has been reported. High intolerance toward conspecifics outside reproductive periods has been noted.
Aggression: Quite aggressive toward conspecifics, and also territorial toward other fish, especially when defending its area.
A sufficiently large aquarium and well-defined territories are important.
Special notes: Neolamprologus ventralis was described by Buscher in 1995 and is characterized by very long, filament-like ventral fin extensions reaching past the base of the caudal fin, as well as a slightly concave outer edge of the caudal fin.
At Kasanga, Tanzania, a similar form was photographed by Ad Konings in 2002 and referred to as Neolamprologus sp. ‘ventralis kasanga’, later exported under the trade name Neolamprologus sp. ‘red dorsal ventralis’. This form inhabits the same depth range and habitat as N. ventralis. Despite having been treated as N. ventralis by Konings, the form known as Neolamprologus sp. ‘ventralis kasanga’ is generally regarded as a separate species based on consistent morphological and behavioural differences. Reported differences include much shorter ventral fins in both sexes, a smaller and less colorful female, a deeper body, shorter snout, reduced dorsal and anal fin height, fewer lateral line scales (31–32 versus 34–36), and a markedly milder temperament in captivity, which has been associated with easier spawning.
Buscher has also mentioned another very similar form from the south-western part of the lake, between the Congo border and Nsumbu National Park, distinguished by the presence of several vertical bars along the body; this form is referred to on tanganyika.si as Neolamprologus sp. ‘ventralis striped’ and is considered likely to represent an as yet undescribed species.

Photo: © Evert van Ammelrooy
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Lake Tanganyika cichlids — species, locations & maps.
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