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Synodontis nigromaculatus Boulenger, 1905

Blackspotted squeaker
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Synodontis nigromaculatus
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Namibia country information

Common names: Spikkel-skreeubaber, Spotted squeaker
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: commercial | Ref: Okeyo, D.O., 2000
Regulations: | Ref:
Uses: live export: yes;
Comments: Known from Okavango, Upper Zambezi, Kwando, and Chobe. Also in Caprivi, South West Africa/Namibia (Ref. 37065). Ornamental fish species (Ref. 52863). Also Ref. 54974.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/wa.html
National Fisheries Authority: http://www.benefit.org.na/
Occurrences: Occurrences Point map
Main Ref: Gosse, J.-P., 1986
National Database:

Common names from other countries

Classification / Names ຊື່ສາມັນ | ຄຳສັບຄ້າຍຄືກັນ | Catalog of Fishes(ຕະກຸນ, ຊະນິດ) | ITIS | CoL | WoRMS | Cloffa

> Siluriformes (Catfishes) > Mochokidae (Squeakers or upside-down catfishes) > Mochokinae
Etymology: Synodontis: Greek, syn, symphysis = grown together + Greek, odous = teeth (Ref. 45335).
  More on author: Boulenger.

Environment: milieu / climate zone / depth range / distribution range ນິເວດວິທະຍາ

; ນ້ຳຈືດ ກ່ຽວກັບ (ຢູ່)ເທິງຊັ້ນພື້ນດິນໃນທະເລເປີດ; pH range: 6.0 - 7.5; dH range: ? - 20.   Tropical; 22°C - 26°C (Ref. 2059); 11°S - 21°S

ການແຜ່ກະຈາຍ ປະເທດ | ເຂດ FAO | ລະບົບນິເວດ | ການປະກົດຕົວ | Point map | ການແນະນຳ | Faunafri

Africa: in the Congo River basin in the Kasai system, upper Lualaba, Luapula drainage and lakes Mweru and Bangwelo in Democratic Republic of the Congo and Zambia (Ref. 75786, 82238). Also in the upper Zambezi and Okavango (Ref. 7248, 11970, 52193, 75786), Cunene, Limpopo (Ref. 3202, 11970, 75786, 82238) and Lake Chiuta (Ref. 75786). Absent from the Lake Tanganyika drainage (Ref. 78218).

ຂະໜາດ / ນ້ຳໜັກ / Age

Maturity: Lm ?  range ? - ? cm
Max length : 38.5 cm TL ຕົວຜູ້/ບໍ່ມີເພດ; (Ref. 3202); ນ້ຳໜັກສູງສຸດທີ່ເຄຍຈັດພີມມາ: 506.00 g (Ref. 52193)

Short description ຕົວທີ່ໃຊ້ໃນການຈຳແນກຊະນິດ | ສະລີລະວິທະຍາ | ການວັດແທກຮູບຮ່າງລັກສະນະພາຍນອກຂອງດິນ,ສັດ,ປາ…

ຄີ (ໜາມ)ແຂງຢູ່ຫຼັງປາ (ທັງໝົດ) : 1; ຄີຫຼັງຂອງປາ (ຄີອ່ອນ) (ທັງໝົດ) : 7; ຄີ(ໜາມ) ແຂງຢູ່ຄີກົ້ນປາ ກຸ່ມປາກະດູກແຂງ ຄວາມຖີ່ຂອງກຸ່ມຖ່າຍທອດພັນ ປາທີ່ມີການເຄື່ອນຍ້າຍຈາກທະເລໄປຫານ້ຳຈືດ ແລະນ້ຳຈືດຫາທະເລ ປາທີ່ມີການເຄື່ອນຍ້າຍຈາກທະເລແລະໄປໄຂ່ຢູ່ນ້ຳຈືດ ຄີກົ້ນຂອງປາ ສັດທີ່ມີກະດູກສັນຫັຼງ ການຖ່າຍທອດທາງກຳມະພັນຈາກພໍ່ແມ່ຫາລູກ: 0; ຄີກົ້ນຂອງປາ: 11 - 15.

ຊີວະສາດ     ຄຳແປສັບ (ຕ.ຢ. epibenthic)

Prefers rocks or marginal vegetation of flowing riverine channels to lagoons or backwaters (Ref. 7248, 52193). It feeds on a variety of food including detritus, algae and plant material, insects, snails and small fish, and scavenges readily (Ref. 7248, 52193). Eggs and larvae of cichlids have been reported in stomach of this species (Ref. 78218). Oviparous (Ref. 205). Breeds during the summer rainy season (Ref. 7248, 52193), with a peak coinciding with heavy rains in January to March (Ref. 13337). Juveniles move off the floodplains when water recedes (Ref. 13337). Grows to a large size (Ref. 246).

Life cycle and mating behavior Maturities | ການສືບພັນ | Spawnings | Egg(s) | Fecundities | ຕົວອ່ອນ

Oviparous (Ref. 205). Distinct pairing during breeding (Ref. 205).

Main reference Upload your references | ເອກະສານອ້າງອີງ | ຜູ້ປະສານງານ | ຜູ້ຮ່ວມມື

Gosse, J.-P., 1986. Mochokidae. p. 105-152. In J. Daget, J.-P. Gosse and D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ISNB, Brussels, MRAC, Tervuren; and ORSTOM, Paris. Vol. 2. (Ref. 3202)

IUCN Red List Status (Ref. 130435)

  Least Concern (LC) ; Date assessed: 01 May 2009

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless




Human uses

ການປະມົງ: ການປະມົງແບບກຸ້ມຕົນເອງ; ຊະນິດປາທີ່ຖືກນຳໃຊ້ເຂົ້າໃນການຫາເພື່ອເປັນເກມກິລາ: ແມ່ນ; ຕູ້ປາ: ເປັນສີນຄ້າ
FAO(Publication : search) | FishSource |

ຂໍ້ມູນຕື່ມອີກ

Trophic ecology
ລາຍການອາຫານ
Diet compositions
Food consumptions
Food rations
ຜູ້ລ້າ
Ecology
ນິເວດວິທະຍາ
Home ranges
Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversions
Recruitments
Abundances
Life cycle
ການສືບພັນ
Maturities
Fecundities
Spawnings
Spawning aggregations
Egg(s)
Egg developments
ຕົວອ່ອນ
ການປ່ຽນແປງຂອງຕົວອ່ອນ
Anatomy
Gill areas
ສະໝອງ
Otoliths
Physiology
Body compositions
Nutrients
Oxygen consumptions
ປະເພດການລອຍ
Swimming speeds
Visual pigment(s)
ສຽງຂອງປາ
Diseases / Parasites
Toxicities (LC50s)
Genetics
ກຳມະພັນ
Electrophoreses
Heritabilities

ເຄື່ອງມື

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ແຫຼ່ງອີນເຕີເນັດ

Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01479 (0.00841 - 0.02600), b=2.87 (2.72 - 3.02), in cm Total Length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).
ຊັ້ນເຂດຮ້ອນ (Ref. 69278):  3.4   ±0.3 se; based on diet studies.
ຄວາມຢືດຢຸ່ນ (Ref. 120179):  ສູງ, ປະຊາກອນຕຳ່ສຸດທີ່ໃຊ້ເວລາສອງໜ້ອຍກວ່າ 15 ເດືອນ (K=0.8).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (21 of 100).
Price category (Ref. 80766):   Unknown.