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Teleostei (teleosts) > Osteoglossiformes (Bony tongues) > Mormyridae (Elephantfishes)
Etymology: Petrocephalus: Latin, petra = stone + Greek, kephale = head (Ref. 45335).
More on authors: Whitehead & Greenwood.

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

Freshwater; demersal. Tropical

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Africa: Tana River, Kenya (Ref. 52331, 91771).

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 15.2 cm TL male/unsexed; (Ref. 52331)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 0; Dorsal soft rays (total): 22 - 27; Anal spines: 0; Anal soft rays: 26 - 29. Diagnosis: Body depth 25.7-35.6% of standard length; predorsal length 57.4-64.5% of standard length; dorsal fin length 16.7-22.2% of standard length; anal fin length 21.4-25.7% of standard length; distance dorsal fin to end of caudal peduncle 42.7-47.2% of standard length; depth of caudal peduncle 29.1-43.9% of its length; 22-27 dorsal fin rays (Ref. 91771).

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae

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Kramer, B., R. Bills, P. Skelton and M. Wink, 2012. A critical revision of the churchill snoutfish, genus Petrocephalus Marcusen, 1854 (Actinopterygii: Teleostei: Mormyridae), from southern and eastern Africa, with the recognition of Petrocephalus tanensis, and the description of five new species. Journal of Natural History 46(35-36):2179-2258. (Ref. 91771)

IUCN Red List Status (Ref. 130435)

Least Concern (LC) ; Date assessed: 01 July 2022

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

More information

Trophic ecology
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Ecology
Ecology

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Length-length rel.
Length-frequencies
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Life cycle
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Egg(s)
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Anatomy
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Brains
Otoliths

Physiology
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Visual pigment(s)
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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=0.01585 (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): 3.3 ±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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Petrocephalus tanensis Whitehead & Greenwood, 1959