klasifikasi / Names Nama-nama umum | Sinonim (persamaan) | Catalog of Fishes(Marga, Jenis) | ITIS | CoL | WoRMS | Cloffa

> Gymnotiformes (Knifefishes) > Hypopomidae (Bluntnose knifefishes)
Eponymy: Dr Janis Rácenis (1915–1980) was a Latvian-born Venezuelan entomologist and ornithologist. [...] (Ref. 128868), visit book page.

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

; air tawar bentopelagis. Tropical

Penyebaran Negara-negara | Daerah-daerah FAO | Ecosystems | Kemunculan | Point map | Introduksi | Faunafri

South America: known only from localities around San Fernando de Atabapo and San Carlos de Rio Negro, Territorio Amazonas, Venezuela.

Size / Weight / umur

Maturity: L_m ? range ? - ? cm
Max length : 11.7 cm TL jantan/; (Ref. 26457)

deskripsi pendek Kunci identifiaksi (pengenalan) | Morfologi | Morfometrik

Duri punggung (Keseluruhan (total)) : 0; duri punggung lunak (Keseluruhan (total)) : 0; Sirip dubur lunak: 171 - 193; vertebrata, bertulang belakang: 94 - 97. Body abruptly attenuated caudally; 23 precaudal vertebrae; cranium higher than in other members of the family; anal rays covered by a thick tissue, giving an undulated shape to the anal fin; basibranchials not ossified (cartilaginous matrices); tail about 1/5 of anal fin base; lateral line incomplete; no scalation on dorsoanteriorly and middorsally.

Life cycle and mating behavior Kematangan | Reproduksi, perkembang biakan | Pemijahan | telur-telur | Fecundity | Larva

rujukan utama Upload your references | Acuan | Koordinator : Albert, James S. | mitra

Albert, J.S., 2003. Hypopomidae (Bluntnose knifefishes). p. 494-496. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref. 37053)

Status IUCN Red List (Ref. 130435: Version 2024-1)

kurang bimbang (LC) ; Date assessed: 01 September 2020

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

ancaman kepada manusia

Harmless

penggunaan manusia

FAO - Publication: search | FishSource |

informasi lanjut

Trophic ecology
Bahan makanan
Komposisi makanan
Konsumsi makanan
Food rations
Pemangsa

Ecology
Ekologi

Population dynamics
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
ukuran frekuensi
Mass conversion
pemulihan
Kelimpahan

Life cycle
Reproduksi, perkembang biakan
Kematangan
Maturity/Gills rel.
Fecundity
Pemijahan
Spawning aggregations
telur-telur
pekembangan telor
Larva
Dinamika larva

Distribution
Negara-negara
Daerah-daerah FAO
Ecosystems
Kemunculan
Introduksi
BRUVS - Videos

Anatomy
Area insang
Brain
Otolith

Physiology
Body composition
Nutrients
Oxygen consumption
Swimming type
Swimming speed
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)

Genetics
Genetika
Heterozygosity
Diturunkan

Human related
Aquaculture systems
profil budidaya air
Strain
Ciguatera cases
Stamps, coins, misc.

Outreach
mitra

Taxonomy
Nama-nama umum
Sinonim (persamaan)
Morfologi
Morfometrik
Gambar

References
Acuan

Alat, peralatan

laporan khas

semak penyelenggaraan akuarium | semak helaian fakta spesis | semak helaian fakta aqulcalture

muat turun XML

ringkasan halaman | Point data | Nama-nama umum | fotos/gambar

Sumber internet

Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00617 (0.00198 - 0.01923), b=3.06 (2.81 - 3.31), 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

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

Racenisia fimbriipinna Mago-Leccia, 1994