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> 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 Ökologie

; süßwasser benthopelagisch; potamodrom (Ref. 10608). Tropical

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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 / Gewicht / Alter

Maturity: L_m ?, range 7 - ? cm
Max length : 25.0 cm SL Männchen/unbestimmt; (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 Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fecundity | Larven

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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 Rote Liste Status (Ref. 130435: Version 2024-1)

nicht bedroht (LC) ; Date assessed: 16 December 2015

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

Harmless

Nutzung durch Menschen

Fischereien: weniger kommerziell

FAO - Publication: search | FishSource |

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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.

Widerstandsfähigkeit (Ref. 120179): mittel, Verdopplung der Population dauert 1,4 - 4,4 Jahre. (Fec = 248).

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

Preiskategorie (Ref. 80766): Unknown.

Cyphomyrus grahami (Norman, 1928)