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Archolaemus santosi  Vari, de Santana & Wosiacki, 2012

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Archolaemus santosi
Female picture by de Santana, C.D.

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

Actinopterygii (ray-finned fishes) > Gymnotiformes (Knifefishes) > Sternopygidae (Glass knifefishes)
Etymology: Archolaemus: Greek, archo = anus + Greek, laimos = throat (Ref. 45335);  santosi: Named for Geraldo Mendes dos Santos of the Instituto Nacional de Pesquisas da Amazônia, the collector of the type series, in recognition of his many contributions to our knowledge of the Amazonian fish fauna.

Environment / Climate / Range Ecology

Freshwater; benthopelagic.   Tropical

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

South America: Rio Jamari, Amazon basin, Brazil.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 21.2 cm TL male/unsexed; (Ref. 93148)

Short description Morphology | Morphometrics

Anal soft rays: 204 - 221. Distinguished from other congeners by having the following combination of characters: the rictus falling short of the vertical through the posterior border of the posterior naris; depth of the caudal filament 6.7-9.1% CL; length of the caudal filament 14.4- 27.0% LEA; anteroposterior length of premaxilla equal to the transverse width; length of the posterior ceratohyal approximately the same length as the ventral hypohyal; length of the coronomeckelian bone less than 20% the length of Meckel’s cartilage; head length to the rear of the opercle 15.0-16.3% LEA; mouth width 7.0-10.3% HL; teeth on the dentary restricted to the anterior one-half or slightly more of the dorsal margin; presence of a narrow dark stripe along the lateral line and a broad band of dusky to dark pigmentation overlying the basal pterygiophores of the anal fin; 19-21 pectoral-fin rays; and 204-221 anal-fin rays (Ref. 93148).

Biology     Glossary (e.g. epibenthic)

Found in rapids (Ref. 93148).

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

Main reference Upload your references | References | Coordinator : Albert, James S. | Collaborators

Vari, R.P., C.D. de Santana and W.B. Wosiacki, 2012. South American electric knifefishes of the genus Archolaemus (Ostariophysi, Gymnotiformes): undetected diversity in a clade of rheophiles. Zoological Journal of the Linnaean Society 165:670-699. (Ref. 93148)

IUCN Red List Status (Ref. 115185)

CITES (Ref. 94142)

Not Evaluated

Threat to humans

  Harmless




Human uses

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 = 0.5156   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00372 (0.00163 - 0.00849), b=2.95 (2.75 - 3.15), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic Level (Ref. 69278):  3.1   ±0.4 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278):  .
Vulnerability (Ref. 59153):  Low vulnerability (11 of 100) .