Protopterus aethiopicus, Marbled lungfish : fisheries

Protopterus aethiopicus Heckel, 1851

Marbled lungfish
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Classification / Names Tên thường gặp | Các synonym ( Các tên trùng) | Catalog of Fishes(Giống, Các loài) | ITIS | CoL | WoRMS | Cloffa

> Ceratodontiformes (Australian lungfishes) > Protopteridae (African lungfishes)
Etymology: Protopterus: Greek, pro = first, in front of + Greek, pteron = wing, fin (Ref. 45335);  aethiopicus: Named after Is. Mesmaekers, commander in Boma (Ref. 40587).
More on author: Heckel.

Environment: milieu / climate zone / depth range / distribution range Sinh thái học

; Nước ngọt gần đáy; Mức độ sâu 0 - 60 m (Ref. 34291), usually 0 - 20 m (Ref. 34291). Tropical; 25°C - 30°C (Ref. 2059)

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Africa: subspecies Protopterus aethiopicus aethiopicus distributed in Nile basin and lakes Albert, Edward, Victoria, Nabugabo, Tanganyika, Kyoga and No (Ref. 3498), also in Lake Turkana (Ref. 52331). Subspecies P. a. congicus distributed in Congo basin, from Upper Lualaba to Kinshasa (Ref. 3498). Subspecies P. a. mesmaekersi distributed in Lower Congo River basin (Ref. 3498).

Length at first maturity / Bộ gần gũi / Khối lượng (Trọng lượng) / Age

Maturity: Lm 73.0, range 70 - 76 cm
Max length : 200 cm TL con đực/không giới tính; (Ref. 34290); common length : 130 cm TL con đực/không giới tính; (Ref. 34290); Khối lượng cực đại được công bố: 17.0 kg (Ref. 13302)

Short description Hình thái học | Sinh trắc học

Smooth, slimy, cylindrical body with deeply embedded scales (Ref. 28714). Tail pointed and confluent with the long dorsal and anal fins; dorsal fin originating at an equal distance from the eye and the vent, or nearer to the latter; pectoral and pelvic fins slender and filamentous (Ref. 34290). 55-70 scales in a longitudinal series from immediately behind the head to above the vent; 40-50 scales around body (Ref. 4903, Ref. 45485). Ribs: 37-40 pairs (Ref. 4903). The dentition consisting of upper and lower tooth-plates in the form of sharp cutting ridges (Ref. 34290). Young fishes with true external gills, but usually absent in specimens greater than 15 cm TL (Ref. 34290). Dark slate-grey above, yellowish-grey or pinkish below; often with numerous dark spots or flecks on the fins and body (some specimens bright yellow ventrally); sensory canals on head and body are outlined in black (Ref. 34290).

Sinh học     Tự điển (thí dụ epibenthic)

Obligate air-breathing (Ref. 126274); Adults inhabit river and lake fringes, swamps and floodplains (Ref. 28714). In Lake Victoria, they are found in open lakes and marginal swamps, in Lake Tanganyika basin, they occur only near rivers and deltas (Ref. 4967). Juveniles are found in the matted roots of papyrus (Ref. 34291). Adults are able to live in streams and swamps which are completely dry for long periods of the year (Ref. 45484). They withstand desiccation on floodplains by aestivating in cocoons until the next rains, breathing air by a small passage leading to the outside (Ref. 45484). Mature individuals breed during flood season (Ref. 28714). One or several females spawn in burrows which are dug and cleaned by the male, who later guards the eggs and the young. The principal diet of adults and sub-adults consists of mollusks, but small fishes and insects are also eaten in small quantities; young individuals less than 35 cm TL feed almost wholly on insects (Ref. 34291). Under laboratory conditions it is an obligatory air breather (Ref. 34291), but under certain conditions lungfish in the wild may not be obligate air breathers and the use of aerial respiration may be a function of ecological as well as physiological factors (Ref. 58531).

Life cycle and mating behavior Chín muồi sinh dục | Sự tái sinh sản | Đẻ trứng | Các trứng | Sự sinh sản | Ấu trùng

The male parent prepares a pit or hole nest. More than one female may spawn in a nest. Once the eggs are laid, the female leaves the nest and does not return. The male then guards the eggs and young for nearly eight weeks. Not only does the male attack any would-be intruders but he constantly aerates the water in the nest (Ref. 4903).

Main reference Upload your references | Các tài liệu tham khảo | Người điều phối | Người cộng tác

Gosse, J.-P., 1984. Protopteridae. p. 8-17. In J. Daget, J.-P. Gosse and D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). Volume I. ORSTOM, Paris and MRAC, Tervuren. 410 p. (Ref. 3498)

IUCN Red List Status (Ref. 125652)

  Least Concern (LC) ; Date assessed: 02 March 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

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Thêm thông tin

Tên thường gặp
Các synonym ( Các tên trùng)
Trao đổi chất
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Sự sinh sản
Các trứng
Egg development
Age/Size
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Length-weight
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Sinh trắc học
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Ấu trùng
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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.6602   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00156 - 0.00972), b=3.10 (2.88 - 3.32), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Mức dinh dưỡng (Ref. 69278):  4.4   ±0.2 se; based on diet studies.
Thích nghi nhanh (Ref. 120179):  Rất thấp, thời gian nhân đôi của chủng quần tối thiểu là hơn 14 năm (Assuming tmax > 30; Fec = 468).
Fishing Vulnerability (Ref. 59153):  Very high vulnerability (90 of 100).
Price category (Ref. 80766):   Unknown.
Nutrients (Ref. 124155):  Calcium = 44 [7, 130] mg/100g ; Iron = 0.72 [0.24, 1.60] mg/100g ; Protein = 3.87 [0.48, 7.56] % ; Omega3 = 0.218 [0.084, 0.569] g/100g ; Selenium = 73.6 [11.3, 243.2] μg/100g ; VitaminA = 22.9 [9.1, 56.4] μg/100g ; Zinc = 0.945 [0.483, 2.040] mg/100g (wet weight);