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Diagnostic Description

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Diagnosis: unique color pattern with 4 conspicuous dark bars radiating from the eye; body silvery, yellowish or blue with a highly contrasting black blotched pattern with anastomosing horizontal and vertical components; faint spots on the pectoral fins; no speckles on head and body; head length 34.0-37.0% of standard length; body depth 32.9-38.3% of standard length; dorsal fin base 49.6-53.7% of standard length; lower jaw 37.5-46.2% head length; head width 40.8-47.0% head length (Ref. 55922).Description: outer and inner teeth in jaw unicuspid in adults, with large gap between inner and outer rows in upper jaw; outer teeth bicuspid and inner teeth weakly tricuspid in small specimens; 3-4 series of cheek scales; lower pharyngeal jaw broad and shallow, but with a relatively deep anterior blade; pharyngeal teeth widely set, sharp and stout, but not enlarged; gill-rakers stout, not elongated, the largest ones flattened; 20-24 scales in upper part of lateral line, 10-15 in lower; 5-6 scales between the pectoral and pelvic fins (Ref. 55922).Coloration: Live: blotched pattern similar as in preserved specimens (Ref. 55922). Adult territorial males: general color blue; dorsal and anal fin blue-grey; dorsal fin with orange lappets and white submarginal band; brown maculae and striae pattern not well developed; anal fin yellow-orange distally; pectoral fins transparent with grey hue; pelvic fins dark with white leading edge (Ref. 55922). Females: white or yellow with dark blotches; unpaired fins yellow; dorsal fin lappets red-brown; pectoral and pelvic fins transparent with yellow hue; anal fin yellow distally (Ref. 55922). Color pattern of immature and non-territorial males intermediate between female and territorial male pattern, becoming more intense blue on the body with increasing territoriality (Ref. 55922). Preserved: no speckles; 4 stripes on the head radiating from the eye; there are 4 blotches on the dorsal part of the body, 4 midlateral blotches, and 3 less obvious blotches in the ventral region; general body color yellow to dark brown; dorsal part of both head and operculum, and the branchiostegal membranes, usually dark; dorsal and caudal fins with maculae; anal and pelvic fins dark; pectoral fins with spots; dorsal fin in large males with light-colored lappets, as is the trailing edge of the pelvic fins and the ventral edge of the anal fin (Ref. 55922).
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Recorder
Tobias Musschoot
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Diseases and Parasites

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White spot Disease. Parasitic infestations (protozoa, worms, etc.)
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Recorder
Allan Palacio
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Diseases and Parasites

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Hole-in-the-Head Disease. Parasitic infestations (protozoa, worms, etc.)
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Allan Palacio
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Diseases and Parasites

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Bacterial Infections (general). Bacterial diseases
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Allan Palacio
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Life Cycle

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Female takes brood into her mouth and takes care of the young.
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Tom Froese
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Morphology

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Dorsal spines (total): 15 - 16; Dorsal soft rays (total): 10 - 11; Analspines: 3; Analsoft rays: 9 - 10
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Trophic Strategy

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Occurs in all kinds of habitats but is more common in vegetated areas of sheltered bays (Ref. 5595). Prefers soft, muddy bottoms but is also seen in purely rocky environments (Ref. 5595, 55463). Feeds on fish (Ref. 5595). Has been observed to mimic as dead and then feed on small fish that get close (Ref. 3817, 13371, 55463). Is usually solitary and territorial (Ref. 3817).
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Pascualita Sa-a
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Biology

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Occurs in all kinds of habitats but is more common in vegetated areas of sheltered bays (Ref. 5595). Prefers soft, muddy bottoms but is also seen in purely rocky environments (Ref. 5595, 55922). Feeds on fish (Ref. 5595). Has been observed to mimic as dead and then feed on small fish that get close (Ref. 3817, 13371, 55922). Is usually solitary and territorial (Ref. 3817).
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Crispina B. Binohlan
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Importance

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aquarium: commercial
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Nimbochromis livingstonii

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Nimbochromis livingstonii, Livingston's cichlid or (locally) kalingono, is a freshwater mouthbrooding cichlid native to Lake Malawi, an African Rift Lake. It is also found in the upper Shire River and Lake Malombe. They are found in inshore areas of the lake over sandy substrates.[2]

Morphology

A laterally compressed fish with a large mouth. Maximum reported length of male fish in the wild is 25 centimetres (9.8 in) TL while females reach 20 centimetres (7.9 in) TL.[2] Colouration variable but typically mottled brown and white. The dorsal fin may also show blue coloration while maintaining an orange to red band and sometimes a white line. Adult males frequently "color up" in response to changing conditions and rapidly change from spotted camouflage to brilliant blues and greens and may even exhibit a pale golden tone. Breeding males turn a dark blue which almost completely obscures their blotched pattern. The anal fin is usually orange to red. Females are similar, but usually lack the yellow "egg spot" markings on the anal fin. Juveniles display a brown and white spotted pattern.

The distinctive colouration of this species is said to mimic that of a dead fish, and may be part of a hunting strategy.

Diet and feeding behaviour

Wild fish feed primarily on small fish, in particular Lethrinops spp. Aquarium specimens have been observed to lie on the substrate as if dead, waiting for small fish to come close in search of a meal. When a suitable target comes into range, the fish quickly lunges at the prey and usually swallows it whole.[3] It is this unique hunting method that gives the fish its local name, kalingono, which means "sleeper".[4]

Reproduction

Males are polygamous and will mate with multiple females. This species is a mouthbrooder with the female incubating up to 100 eggs until they hatch and the fry become free swimming,[4] much like the Astatotilapia burtoni which is of the same tribe.

Economic importance

Nimbochromis livingstonii is used locally as a food fish and is also collected and traded as an aquarium fish.

Name

The identity of the person honoured in the specific name is not given in Günther's description but it is thought likely to be the Scottish missionary and explorer Dr. David Livingstone (1813-1873) who was the first known European to discover Lake Malawi in 1856, collecting the first specimens of fishes from the Lake.[5]

See also

References

  1. ^ Konings, A.; Kazembe, J.; Makocho, P.; Mailosi, A. (2019). "Nimbochromis livingstonii". IUCN Red List of Threatened Species. 2019: e.T60910A155045068. doi:10.2305/IUCN.UK.2018-2.RLTS.T60910A155045068.en.|date= / |doi= mismatch
  2. ^ a b Froese, Rainer; Pauly, Daniel (eds.) (2013). "Nimbochromis livingstonii" in FishBase. April 2013 version.
  3. ^ "Livingstoni Cichlid Livingston's Cichlid, Livingston's Hap, Livingstonii". Animal Web. Retrieved 29 December 2018.
  4. ^ a b "Nimbochromis livingstonii". Seriously Fish. Retrieved 29 December 2018.
  5. ^ Christopher Scharpf & Kenneth J. Lazara (4 December 2018). "Order CICHLIFORMES: Family CICHLIDAE: Subfamily PSEUDOCRENILABRINAE (l-o)". The ETYFish Project Fish Name Etymology Database. Christopher Scharpf and Kenneth J. Lazara. Retrieved 29 December 2018.
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Nimbochromis livingstonii: Brief Summary

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Nimbochromis livingstonii, Livingston's cichlid or (locally) kalingono, is a freshwater mouthbrooding cichlid native to Lake Malawi, an African Rift Lake. It is also found in the upper Shire River and Lake Malombe. They are found in inshore areas of the lake over sandy substrates.

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