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Tylochromis robertsi : fisheries
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Classification / Names
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|
Synonyms
| Catalog of Fishes(
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,
species
) |
ITIS
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Cloffa
Teleostei (teleosts) >
Cichliformes
(Cichlids, convict blennies) >
Cichlidae
(Cichlids) > Pseudocrenilabrinae
Etymology:
Tylochromis:
Greek, tylos = callus + Greek, chromis = a fish, perhaps a perch (Ref.
45335
)
;
robertsi:
Named for Tyson R. Roberts whose knowledge of the African waterways and their ichthyofauna has been of great value to many studies of the freshwater fishes of Africa (Ref.
52346
)
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; benthopelagic. Tropical; 22°C - 25°C (Ref.
2060
)
Africa: mainstream middle Congo River, Ubangi, Uele, Kotto, Mongala (Ref.
52346
), Itimbiri, Aruwimi (Ref.
52346
,
106245
) and Wagenia Falls (Ref.
106290
) (middle Congo River basin) in Democratic Republic of the Congo and Central African Republic. Also a single record from the river Kama-Elila (Lualaba tributary) in Democratic Republic of the Congo (Ref.
52346
).
Size / Weight / Age
Maturity: L
m
 
?
  range ? - ? cm
Max length : 21.1 cm SL male/unsexed; (Ref.
52346
)
Short description
Morphology
|
Morphometrics
Dorsal
spines
(total): 14 - 16;
Dorsal
soft rays
(total): 12-15;
Anal
spines
: 3;
Anal
soft rays
: 7 - 8;
Vertebrae
: 28 - 29. Diagnosis: upper lateral line extending full length of dorsal fin base and descending a row before proceeding length of three or more scales; 14-15 gill-rakers, widely spaced along lower limb of first arch; 36-40 lateral line scales; head length 29.0-35.7% of standard length; usually 29 vertebrae; inferior vertebral apophysis short and oriented caudad rather than of standard
Tylochromis
type (Ref.
52346
).
Opportunistic benthic macrophage (Ref.
52346
). Mainly feeds on plants and insects (as well as their larvae) (Ref.
52307
). Female mouthbrooder (Ref.
52307
,
52346
) that does not pair-bond (Ref.
52307
).
Life cycle and mating behavior
Maturity
|
Reproduction
|
Spawning
|
Eggs
|
Fecundity
|
Larvae
Stiassny, M.L.J.
, 1989. A taxonomic revision of the African genus
Tylochromis
(Labroidei, Cichlidae); whith notes on the anatomy and relationships of the group. Ann. Mus. R. Afr. Cent. Ser. 8, Sci. Zool., 258:1-161. (Ref.
52346
)
IUCN Red List Status (Ref.
130435
)
Least Concern (LC)
; Date assessed:
16 February 2009
CITES
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
Fisheries:
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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=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref.
93245
).
Trophic level (Ref.
69278
): 2.4 ±0.22 se; based on food items.
Resilience (Ref.
120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153
): Low vulnerability (16 of 100).
Price category (Ref.
80766
):
Unknown
.
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