http://www.fishbase.org/Summary/speciesSummary.php?genusname=Oreochromis&speciesname=rukwaensis ---> http://192.134.151.83/Summary/speciesSummary.php?genusname=Oreochromis&speciesname=rukwaensis http://192.134.151.83/Summary/speciesSummary.php?genusname=Oreochromis&speciesname=rukwaensis ---> https://fishbase.mnhn.fr/Summary/speciesSummary.php?genusname=Oreochromis&speciesname=rukwaensis https://fishbase.mnhn.fr/Summary/speciesSummary.php?genusname=Oreochromis&speciesname=rukwaensis ---> https://fishbase.mnhn.fr/summary/Oreochromis-rukwaensis.html
Oreochromis rukwaensis, Lake Rukwa tilapia : fisheries
You can
sponsor
this page
Common name (e.g. trout)
Genus + Species (e.g. Gadus morhua)
-
-
About this page
-
Languages
-
User feedbacks
-
Citation
-
Uploads
-
Related species
-
Lake Rukwa tilapia
Upload your
photos
and
videos
Pictures
|
Google image
Oreochromis rukwaensis
Male picture by
Turner, G.F.
Teleostei (teleosts) >
Cichliformes
(Cichlids, convict blennies) >
Cichlidae
(Cichlids) > Pseudocrenilabrinae
Etymology:
Oreochromis:
Latin, aurum = gold + Greek, chromis = a fish, perhaps a perch (Ref.
45335
)
.
More on authors:
Hilgendorf
&
Pappenheim
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; benthopelagic. Tropical; 7°S - 9°S
Africa: Lake Rukwa (Ref.
2
,
118630
) and upper Great Ruaha River in Tanzania (Ref.
118630
).
Size / Weight / Age
Maturity: L
m
 
?
  range ? - ? cm
Max length : 33.0 cm SL male/unsexed; (Ref.
4967
)
Dorsal
spines
(total): 15 - 17;
Dorsal
soft rays
(total): 11-13;
Anal
spines
: 3;
Anal
soft rays
: 10 - 11;
Vertebrae
: 30. Diagnosis: Typical tilapiine cichlid, relatively deep bodied, with rather a small head (Ref.
118638
). Other distinguishing characters are: caudal fin free of scales except basally; vertebrae 30; scales in lateral line series 30-32; dorsal spines XV-XVII; soft rays usually 11-13; outer teeth bicuspid, in mature fishes occasionally with a few tricuspids; lower gill-rakers 20-22; interorbital region in adults 34.5-40.0% length of head (Ref.
2
). Ripe males have a dark body and fins, almost black, with bright red/orange margins on the dorsal and caudal fins; vertical barring can be noticeable in freshly caught specimens; head region in ripe males has a bluish sheen; ripe males have yellow-orange tassels; females and subadult males plain silver/grey with 6-7 post-opercular vertical stripes and bluish snout present in freshly caught specimens (Ref.
118638
).
This species is found both in large lakes and small rivers (Ref.
4967
,
118638
). A maternal mouthbrooder (Ref.
118638
). Males construct territories in shallow water; where there was ample space they were similar in structure and grouping to those of
Oreochromis variabilis
, each territory consisting of a central raised mating platform in the middle of a large circular depression (Ref.
2
). It is a major component of the fisheries catch in Lake Rukwa and the Mtera Dam (Ref.
118638
). Strong aquaculture potential given broad habitat requirements (Ref.
118638
). IUCN conservation status is stated as vulnerable D2, declining population trend (Ref.
118638
).
Life cycle and mating behavior
Maturity
|
Reproduction
|
Spawning
|
Eggs
|
Fecundity
|
Larvae
A maternal mouthbrooder (Ref.
118638
). Males construct territories in shallow water; where there was ample space they were similar in structure and grouping to those of
Oreochromis variabilis
, each territory consisting of a central raised mating platform in the middle of a large circular depression; males occupy these territories at sunrise, when water temperature was 12°C and they left for deeper water in the late afternoon when the temperature rose to 25°C (Ref.
2
). It exhibits pseudo-spawning and then true spawning follows (Ref.
2
).
Trewavas, E.
, 1983. Tilapiine fishes of the genera
Sarotherodon
,
Oreochromis
and
Danakilia
. British Mus. Nat. Hist., London, UK. 583 p. (Ref.
2
)
IUCN Red List Status (Ref.
130435
)
Vulnerable (VU)
(D2); Date assessed:
31 January 2006
CITES
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
Fisheries: commercial
FAO - Publication:
search
|
FishSource
|
More information
Countries
FAO areas
Ecosystems
Occurrences
Introductions
Stocks
Ecology
Diet
Food items
Food consumption
Ration
Common names
Synonyms
Metabolism
Predators
Ecotoxicology
Reproduction
Maturity
Spawning
Spawning aggregation
Fecundity
Eggs
Egg development
Age/Size
Growth
Length-weight
Length-length
Length-frequencies
Morphometrics
Morphology
Larvae
Larval dynamics
Recruitment
Abundance
BRUVS
References
Aquaculture
Aquaculture profile
Strains
Genetics
Electrophoreses
Heritability
Diseases
Processing
Nutrients
Mass conversion
Collaborators
Pictures
Stamps, Coins Misc.
Sounds
Ciguatera
Speed
Swim. type
Gill area
Otoliths
Brains
Vision
Tools
E-book
|
Field guide
|
Length-frequency wizard
|
Life-history tool
|
Point map
|
Classification Tree
|
Catch-MSY
|
Special reports
Check for Aquarium maintenance
|
Check for Species Fact Sheets
|
Check for Aquaculture Fact Sheets
Download XML
Summary page
|
Point data
|
Common names
|
Photos
Internet sources
AFORO (otoliths) |
Aquatic Commons
|
BHL
|
Cloffa
|
BOLDSystems
|
Websites from users
|
Check FishWatcher
|
CISTI
|
Catalog of Fishes
:
genus
,
species
|
DiscoverLife
|
ECOTOX
| FAO - Publication:
search
|
Faunafri
| Fishipedia |
Fishtrace
| GenBank:
genome
,
nucleotide
| GloBI |
Google Books
|
Google Scholar
|
Google
| IGFA World Record |
MitoFish
|
Otolith Atlas of Taiwan Fishes
|
PubMed
| Reef Life Survey | Socotra Atlas |
Tree of Life
| Wikipedia:
Go
,
Search
| World Records Freshwater Fishing |
Zoological Record
Estimates based on models
Phylogenetic diversity index (Ref.
82804
): PD
50
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01905 (0.00827 - 0.04391), b=3.01 (2.82 - 3.20), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245
).
Resilience (Ref.
120179
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153
): Low to moderate vulnerability (30 of 100).
Price category (Ref.
80766
):
Unknown
.
Back to Search
Random Species
Back to Top
Accessed through:
Not available
FishBase mirror site :
localhost
Page last modified by :
mrius-barile
- 20 July 2016
Fatal error
: Uncaught ArgumentCountError: Too few arguments to function checkEcotox(), 1 passed in /var/www/html/summary/speciessummary.php on line 2304 and exactly 3 expected in /var/www/html/includes/speciessummary.lib.php:2579 Stack trace: #0 /var/www/html/summary/speciessummary.php(2304): checkEcotox() #1 {main} thrown in
/var/www/html/includes/speciessummary.lib.php
on line
2579
|