Phenacogrammus interruptus
(Boulenger, 1899)
Congo tetra

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Classification / Names

Teleostei (teleosts) > Characiformes (Characins) > Alestidae (African tetras)
Etymology: Phenacogrammus: Greek, phenax, -akos = deceptive + Greek, gramma = letter, signal (Ref. 45335).
More on author: Boulenger.

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

Freshwater; benthopelagic; pH range: 6.0 - 8.0; dH range: 5 - 19; 23°C - 26°C (Ref. 30491) preferred ?; tropical.

Distribution

Africa: lower and middle Congo River basin in Democratic Republic of the Congo (Ref. 42032) and Republic of Congo (Ref. 44840).

Size / Weight / Age

Max length: 8.0 cm TL male/unsexed (Ref. 7020); max length: 6.0 cm (female).

Biology

Feeds on worms, small insects, crustaceans and plant matter (Ref. 7020). Aquarium keeping: in groups of 5 or more individuals; minimum aquarium size 100 cm (Ref. 51150).

Life cycle and mating behavior

In tank, after vigorous driving by the male, the female lays up to 300 eggs, sometimes more, which sink to the bottom. Eggs hatch after about 6 days (Ref. 7020).

Main reference

Paugy, D. 1984 Characidae. p. 140-183. In J. Daget, J.-P. Gosse and D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ORSTOM, Paris and MRAC, Tervuren. Vol. 1. (Ref. 5331)

IUCN Red List Status (Ref. 125652)

  Least Concern (LC); date assessed: February 16 2009

CITES (Ref. 123416)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless

More information
Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD50 = 0.502 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01148 (0.00528 - 0.02495), b=3.00 (2.82 - 3.18), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.0 ±0.3 se; Based on food items.

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).

Nutrients (Ref. 124155): Calcium = 0 [0, 0] mg/100g; Iron = 0 [0, 0] mg/100g; Protein = 0 [0, 0] %; Omega3 = 0 [0, 0] g/100g; Selenium = 0 [0, 0] μg/100g; VitaminA = 0 [0, 0] μg/100g; Zinc = 0 [0, 0] mg/100g (wet weight);