Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > Osteoglossiformes (Bony tongues) > Mormyridae (Elephantfishes)
Eponymy: Michael Graham (1898–1972) was a fisheries biologist and ichthyologist who worked for the Crown Agents. [...] (Ref. 128868), visit book page.
More on author: Norman.

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

Freshwater; benthopelagic; potamodromous (Ref. 10608). Tropical

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

Africa: Lake Victoria and affluent rivers, Lake Kyoga basin (Ref. 4903), Victoria Nile (Ref. 12526) and Middle Akagera system (Ref. 46152).

Length at first maturity / Size / Weight / Age

Maturity: L_m ?, range 7 - ? cm
Max length : 25.0 cm SL male/unsexed; (Ref. 4967)

In Lake Victoria in shallow, coastal waters particularly where bottom is sandy (Ref. 4903). In Lake Kyoga it frequents areas overgrown by water lilies (Ref. 49805). Feeds on chironomid larvae, and to lesser extent on Trichoptera, Gastropoda (Ref. 12526). Oviparous (Ref. 205). Males grow to larger size than females; breeds twice a year, during the rainy seasons; migrates up the river to spawn (Ref. 10608).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

Sullivan, J.P.: Hopkins, C.D., S. Pirro, R. Peterson, A. Chakona, T.I. Mutizwa, C. Mukweze Mulelenu, F.H. Alqahtani, E. Vreven and C.B. Dillman, 2022. Mitogenome recovered from a 19th century holotype by shotgun sequencing supplies a generic name for an orphaned clade of African weakly electric fishes (Osteoglossomorpha, Mormyridae). ZooKeys 1129:163-196. (Ref. 128501)

IUCN Red List Status (Ref. 130435: Version 2024-1)

Least Concern (LC) ; Date assessed: 16 December 2015

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

Fisheries: minor commercial

FAO - Publication: search | FishSource |

More information

Trophic ecology
Food items
Diet composition
Food consumption
Food rations
Predators

Ecology
Ecology

Population dynamics
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
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Abundance

Life cycle
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Maturity
Maturity/Gills rel.
Fecundity
Spawning
Spawning aggregations
Eggs
Egg development
Larvae
Larval dynamics

Distribution
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Anatomy
Gill area
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Otolith

Physiology
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Nutrients
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Swimming type
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Visual pigments
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Genetics
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Stamps, coins, misc.

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Summary page | Point data | Common names | Photos

Internet sources

Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5002 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01288 (0.00598 - 0.02775), b=2.86 (2.68 - 3.04), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.2 ±0.40 se; based on food items.

Resilience (Ref. 120179): Medium, minimum population doubling time 1.4 - 4.4 years (Fec = 248).

Fishing Vulnerability (Ref. 59153): Low vulnerability (21 of 100).

Price category (Ref. 80766): Unknown.

Cyphomyrus grahami (Norman, 1928)