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Alestes inferus  Stiassny, Schelly & Mamonekene, 2009

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Alestes inferus
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drawing shows typical fish in this Family.

Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Characiformes (Characins) > Alestidae (African tetras)
Etymology: Alestes: Greek, alestes, -oy = miller (Ref. 45335);  inferus: The name inferus, from the Latin, means below, lower, southern; it is named in reference to the occurrence of the species below a series of rapids on the lower Congo River, in a south bank tributary (Ref. 80450).

Environment / Climate / Range Ecology

Freshwater; pelagic.   Tropical; 5°S - 6°S, 13°E - 14°E

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

Africa: known only from the lower Mpozo River, near its confluence with the mainstream lower Congo River, in Democratic Republic of the Congo (Ref. 80450).

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 9.4 cm SL male/unsexed; (Ref. 80450)

Short description Morphology | Morphometrics

Dorsal spines (total): 0; Dorsal soft rays (total): 10; Anal spines: 0; Anal soft rays: 19 - 21; Vertebrae: 39 - 40. Diagnosis: Alestes inferus is distinguished from all congeners by the possession of fewer pored scales along the lateral line (31-33 vs 36-51) and fewer vertebrae (39-40 versus 41-49) (Ref. 80450). It is further differentiated from A. dentex, A. baremoze and A. stuhlmanni in the possession of fewer gill rakers along the lower limb of the first arch (15-17 versus 23-58) (Ref. 80450). Dorsal fin with 2 unbranched and 8 branched rays; anal fin with 3 unbranched and 16-18 branched rays; origin of dorsal fin at, or slightly in front of, vertical through pelvic-fin origin (Ref. 80450). Lateral-line scales with bifurcating external canal in region proximate to overlap with following scale, each bifurcation terminating in a small pore (Ref. 80450). Description: Coloration: In alcohol base body coloration yellowish brown dorsally, pale cream ventrally; a darkly pigmented, deep-lying stripe extends from dorsoposterior margin of opercle to base of caudal peduncle, not extending over caudal fin; trace of a band of dark melanophores present above anal fin (Ref. 80450). Pectoral and pelvic fins creamy white; adipose fin dusky gray with a narrow marginal band of darker pigment; dorsal fin somewhat dusky proximally with yellow-orange band mid-dorsally, dusky gray proximally; anal fin pale proximally becoming darker along distal margin; caudal fin dusky gray with yellow-orange patch posteriorly on dorsal and ventral lobes, distal margin dark gray (Ref. 80450). In life with blue-green iridescence dorsally and dorsolaterally, silvery-white laterally and ventrally; no trace of midlateral band or of melanophores above anal fin (Ref. 80450). Pectoral and pelvic fins pale yellowish hyaline; dorsal fin hyaline proximally, orange distally; adipose pale dusky gray with a narrow darker gray distal margin; anal fin pale dusky gray; caudal fin pale dusky gray, orange banding along the posterodorsal and posteroventral lobes, and with a narrow, dark gray distal margin (Ref. 80450).

Biology     Glossary (e.g. epibenthic)

Collected in shallow water and in deeper pools alongside emergent grasses at the riverbank over a substrate dominated by large rocks and rock rubble (Ref. 80450).

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

Main reference Upload your references | References | Coordinator | Collaborators

Stiassny, M.L.J., R.C. Schelly and V. Mamonekene, 2009. A new Alestes (Characiformes, Alestidae) from the Mpozo River in the Democratic Republic of Congo. Copeia 2009(1):110-116. (Ref. 80450)

IUCN Red List Status (Ref. 115185)

CITES (Ref. 94142)

Not Evaluated

Threat to humans

  Harmless




Human uses

Fisheries:
FAO(Publication : search) | FisheriesWiki |

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Internet sources

BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | ECOTOX | Faunafri | Fishes of Iran | Fishtrace | GenBank(genome, nucleotide) | GloBI | GOBASE | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Scirus | SeaLifeBase | Tree of Life | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5078   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01122 (0.00514 - 0.02450), 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   ±0.4 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278):  High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153):  Low vulnerability (11 of 100) .