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Petrocephalus sullivani
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drawing shows typical species in Mormyridae.
Teleostei (teleosts) >
Osteoglossiformes
(Bony tongues) >
Mormyridae
(Elephantfishes)
Etymology:
Petrocephalus:
Latin, petra = stone + Greek, kephale = head (Ref.
45335
)
;
sullivani:
This species is dedicated to John P. Sullivan, colleague and friend of the authors, in recognition of his contributions to the systematics of the Mormyridae.
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; benthopelagic. Tropical
Africa: Widespread in Gabon. It has been collected from the Ogooué basin (excepting its most upper and lower reaches), the Ntem and Ivindo basins, and the Nyanga basin. On numerous occasions, the authors collected this species together with
P. simus
(Ref.
52344
).
Size / Weight / Age
Maturity: L
m
 
?
  range ? - ? cm
Max length : 9.3 cm SL male/unsexed; (Ref.
52344
)
Short description
Morphology
|
Morphometrics
Petrocephalus sullivani
is distinguished from all other
Petrocephalus
species from Gabon by the following characters: 20 to 25 branched rays in the dorsal fin and 24 to 30 in the anal fin; 14 to 20 scales (average 17.5) between the anterior base of the anal fin and the lateral line; mouth clearly inferior (distance between anterior extremityof th esnout and corner of the mouth between 2.7 and 4.4 times in head length; mouth opens under the posterior half of the eye, whereas in
P. simus
and
P. balayi
it opens under the anterior half of the eye); large eye (diameter of the eye between 3.0 and 4.1 times in head length, average 3.6); and no sub-dorsal black spot. The EOD is short (216 ms mean duration) with a peak FFT frequency of 9597 Hz. The EOD presents a prominent third phase (P3) with an amplitude of 12.8% of peak-to-peak height. Eye relatively large. Eye diameter between 3.0 and 4.1 times in head length (average 3.5) (Ref.
52344
).
Life cycle and mating behavior
Maturity
|
Reproduction
|
Spawning
|
Eggs
|
Fecundity
|
Larvae
Lavoué, S., C.D. Hopkins and A. Kamdem Toham
, 2004. The
Petrocephalus
(Pisces, Osteoglossomorpha, Mormyridae) of Gabon, Central Africa, with the description of a new species. Zoosystema 26(3):511-535. (Ref.
52344
)
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
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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=0.01585 (0.00697 - 0.03603), b=2.85 (2.67 - 3.03), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245
).
Trophic level (Ref.
69278
): 3.2 ±0.4 se; based on size and trophs of closest relatives
Resilience (Ref.
120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153
): Low vulnerability (10 of 100).
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Page last modified by :
mrius-barile
- 20 July 2016
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