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Opsaridium tweddleorum Skelton, 1996

dwarf sanjika
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Image of Opsaridium tweddleorum (dwarf sanjika)
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drawing shows typical species in Danionidae.

Classification / Names Nomi Comuni | Sinonimi | Catalog of Fishes(Genere, Specie) | ITIS | CoL | WoRMS | Cloffa

> Cypriniformes (Carps) > Danionidae (Danios) > Chedrinae
Etymology: Opsaridium: Greek, opsarion, -ou = a little portion fish (Ref. 45335).
Eponymy: Denis (d: 1949) and Sharon Tweddle are husband and wife and together were honoured in the name of the dwarf sanjika for their contributions (e. [...] (Ref. 128868), visit book page.

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

; acqua dolce demersale. Tropical

Distribuzione Stati | Aree FAO | Ecosystems | Presenze | Point map | Introduzioni | Faunafri

Africa: western affluent perennial rivers of Lake Malawi and tributaries of Shire River, lower Zambezi (Ref. 26673, 52193).

Size / Peso / Age

Maturity: Lm ?  range ? - ? cm
Max length : 11.0 cm SL maschio/sesso non determinato; (Ref. 52193)

Short description Chiavi di identificazione | Morfologia | Morfometria

Spine dorsali (totale) : 0; Raggi dorsali molli (totale) : 10 - 11; Spine anali: 0; Raggi anali molli: 16.

Biologia     Glossario (es. epibenthic)

Found in swift-flowing streams in rocky reaches over clean sand (Ref. 52193).; prefers clear, fast flowing waters (Ref. 26673). It feeds on insects and other invertebrates in the drift (Ref. 52193). Breeds in summer (Ref. 52193).

Life cycle and mating behavior Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve

Main reference Upload your references | Bibliografia | Coordinatore | Collaboratori

Skelton, P.H., 1996. A review of Opsaridium zambezense (Pisces: Cyprinidae) from southern Africa with description of a new species from Malawi. Ichthyol. Explor. Freshwat. 7(1):59-84. (Ref. 26673)

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

  Data deficient (DD) ; Date assessed: 21 May 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

FAO - Publication: search | FishSource |

Informazioni ulteriori

Trophic ecology
Prede
Alimentazione
Consumo di cibo
Food rations
Predatori
Ecology
Ecologia
Population dynamics
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Reclutamento
Abbondanza
Life cycle
Riproduzione
Maturità
Maturity/Gills rel.
Fecundity
Deposizione
Spawning aggregations
Uova
Egg development
Larve
Dinamica popolazioni larvali
Distribution
Stati
Aree FAO
Ecosystems
Presenze
Introduzioni
BRUVS - Videos
Anatomy
Area branchiale
Brain
Otolith
Physiology
Body composition
Nutrients
Oxygen consumption
Swimming type
Swimming speed
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)
Genetics
Genetica
Heterozygosity
Ereditarietà
Human related
Aquaculture systems
Profili di acquacoltura
Varietà
Ciguatera cases
Stamps, coins, misc.
Outreach
Collaboratori
Taxonomy
Nomi Comuni
Sinonimi
Morfologia
Morfometria
Immagini
References
Bibliografia

Strumenti

E-book | Giuda pratica | Chiavi di identificazione | Generatore frequenze di lunghezza | Strumento Parametri Biologici | Mappa dei ritrovamenti | Classification Tree | Catch-MSY |

Special reports

Check for Aquarium maintenance | Check for Species Fact Sheets | Check for Aquaculture Fact Sheets

Download XML

Summary page | Point data | Nomi Comuni | Photos

Fonti Internet

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: Genere, Specie | 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, ricerca | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5002   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref. 93245).
Trophic level (Ref. 69278):  3.3   ±0.4 se; based on size and trophs of closest relatives
Resilienza (Ref. 120179):  Alto, tempo minimo di raddoppiamento della popolazione meno di 15 mesi (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).
Nutrients (Ref. 124155):  Calcium = 500 [302, 1,184] mg/100g; Iron = 3.03 [1.80, 5.47] mg/100g; Protein = 17.5 [16.6, 18.5] %; Omega3 = 0.606 [0.244, 1.610] g/100g; Selenium = 48.2 [19.5, 118.7] μg/100g; VitaminA = 126 [41, 391] μg/100g; Zinc = 2.46 [1.55, 3.81] mg/100g (wet weight);