Acestrocephalus pallidus  Menezes, 2006

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

Actinopterygii (ray-finned fishes) > Characiformes (Characins) > Characidae (Characins) > Characinae
Etymology: Acestrocephalus: Greek, agkistron = hook + Greek, kepahle = head (Ref. 45335);  pallidus: From the Latin adjective pallidus, meaning pale, in reference to the overall body color of this species.

Environment / Climate / Range Ecology

Freshwater; benthopelagic.   Tropical

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 6.1 cm SL male/unsexed; (Ref. 75890)

Short description Morphology | Morphometrics

Dorsal soft rays (total): 11; Anal soft rays: 36 - 40; Vertebrae: 38 - 39. Can be distinguished from Acestrocephalus boehlkei, Acestrocephalus maculosus and Acestrocephalus stigmatus by the absence of dark humeral blotch characteristic of these species. Differs from Acestrocephalus sardina and Acestrocephalus nigrifasciatus by having smaller eye and fewer maxillary teeth (30-38 vs. 40-46). Can be separated from Acestrocephalus acutus by possessing only scattered dark chromatophores instead of the typical oblong dark blotch on the caudal-fin base of that species and the first pleural rib, the cavity anterior to it and the obliquus inferioris muscle visible (vs. entirely covered by the fibers of the obliquus superioris muscle in Acestrocephalus acutus (Ref. 75890).

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

South America: known only from rio Madeira and rio Machado, a tributary of rio Madeira in Brazil.

Biology     Glossary (e.g. epibenthic)

Main reference Upload your references | References | Coordinator | Collaborators

Menezes, N.A., 2006. Description of five new species of Acestrocephalus Eigenmann and redescription of A. sardina and A. boehlkei (Characiformes: Characidae). Neotrop. Ichthyol. 4(4):385-400. (Ref. 75890)

IUCN Red List Status (Ref. 90363)

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 | Faunafri | Fishtrace | GenBank(genome, nucleotide) | GOBASE | Google Books | Google Scholar | Google | IGFA World Record | iSpecies | PubMed | Scirus | SeaLifeBase | Tree of Life | uBio | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5039   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01122 (0.00514 - 0.02450), b=3.04 (2.87 - 3.21), based on all LWR estimates for this body shape (Ref. 93245).
Trophic Level (Ref. 69278):  3.5   ±0.5 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278):  .
Vulnerability (Ref. 59153):  Low vulnerability (10 of 100) .