Actinopteri (ray-finned fishes) > Osteoglossiformes
(Bony tongues) > Mormyridae
Etymology: Petrocephalus: Latin, petra = stone + Greek, kephale = head (Ref. 45335); wesselsi: Named for Pierre Wesselsi.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; pelagic. Subtropical
Africa: Incomati River system (Sabie River forms a part of it), the Blyde and Letaba rivers that both drain into the Limpopo (a major independent system), and in the Pongola River (Natal).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 11.4 cm SL male/unsexed; (Ref. 38306); 10.9 cm SL (female)
Inhabits fast flowing, major, perennial river, bordered by dense, subtropical or tropical vegetation (Ref. 38306).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Kramer, B. and F.H. van der Bank, 2000. The southern churchill, Petrocephalus wesselsi, a new species of mormyrid from South Africa defined by electric organ discharges, genetics, and morphology. Environ. Biol. Fishes 59(4):393-413. (Ref. 38306)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 123416)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 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
): 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.).
Vulnerability (Ref. 59153
): Low vulnerability (13 of 100) .