Rhamphichthys atlanticus, Atlantic knifefish

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Rhamphichthys atlanticus Triques, 1999

Atlantic knifefish
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drawing shows typical species in Rhamphichthyidae.

Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > Gymnotiformes (Knifefishes) > Rhamphichthyidae (Sand knifefishes)
Etymology: Rhamphichthys: Greek, rhamphos = bill, peak + Greek, ichthys = fish (Ref. 45335);  atlanticus: atlanticus to indicate that the Pindaré-Mearim river system delivers directly to the Atlantic Ocean, not to other larger drainage..

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

Freshwater; benthopelagic. Tropical

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

South America: known only from the type locality, Viana Lake, Pindaré-Mearim river system in Brazil.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 67.3 cm SL male/unsexed; (Ref. 35403)

Short description Morphology | Morphometrics

Dorsal spines (total): 0; Dorsal soft rays (total): 0. Anal fin uniform light brown, not hyaline, without dark bars or lines or any other kinds of marks on it. Membranous, wide swim-bladder, with visceral organs overlapping it laterally in part or completely. No caudal fin (Ref. 35403).

Biology     Glossary (e.g. epibenthic)

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

Main reference Upload your references | References | Coordinator : Campos-da-Paz, Ricardo | Collaborators

Triques, M.L., 1999. Three new species of Rhamphichthys Müller et Troschel, 1846 (Ostariophysi: Gymnnotiformes: Rhamphichthyidae). Rev. Fr. Aquariol. 26(1-2):1-6. (Ref. 35403)

IUCN Red List Status (Ref. 130435)

  Data deficient (DD) ; Date assessed: 01 March 2007

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

FAO - Publication: search | FishSource |

More information

Countries
FAO areas
Ecosystems
Occurrences
Introductions
Stocks
Ecology
Diet
Food items
Food consumption
Ration
Common names
Synonyms
Metabolism
Predators
Ecotoxicology
Reproduction
Maturity
Spawning
Spawning aggregation
Fecundity
Eggs
Egg development
Age/Size
Growth
Length-weight
Length-length
Length-frequencies
Morphometrics
Morphology
Larvae
Larval dynamics
Recruitment
Abundance
BRUVS
References
Aquaculture
Aquaculture profile
Strains
Genetics
Electrophoreses
Heritability
Diseases
Processing
Nutrients
Mass conversion
Collaborators
Pictures
Stamps, Coins Misc.
Sounds
Ciguatera
Speed
Swim. type
Gill area
Otoliths
Brains
Vision

Tools

Special reports

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Internet sources

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: genus, species | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome, nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: Go, Search | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5010   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00263 (0.00101 - 0.00685), b=3.05 (2.82 - 3.28), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic level (Ref. 69278):  3.3   ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref. 59153):  Moderate to high vulnerability (53 of 100).