Latvia country information

Common names: Gortschak
Occurrence: misidentification
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments:
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/lg.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Kottelat, M. and J. Freyhof, 2007
National Database: Fish of Latvia

Common names from other countries

Bouvière, Rozanka a. siekierka, Gortschak, ... more

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

> Cypriniformes (Carps) > Acheilognathidae (Bitterlings)
Etymology: Rhodeus: Greek, rhodeos, a,-on = rose (Ref. 45335).
More on author: Pallas.

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

; acqua dolce benthopelagico; pH range: 5.8 - 6.3; dH range: 2 - 3; potamodromo; distribuzione batimetrica 0 - ? m. Temperate; 18°C - 21°C (Ref. 1672); 60°N - 35°N, 5°W - 145°E

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

Asia. Amur basin and Sakhalin Island, Russia. Introduced elsewhere.

Length at first maturity / Size / Peso / Age

Maturity: L_m 3.5, range 3 - 4 cm
Max length : 11.0 cm TL maschio/sesso non determinato; (Ref. 5723); Età massima riportata: 5 anni (Ref. 27368)

Short description Chiavi di identificazione | Morfologia | Morfometria

Spine dorsali (totale) : 3; Raggi dorsali molli (totale) : 8 - 10; Spine anali: 3; Raggi anali molli: 8 - 10; Vertebre: 34 - 38.

Occurs in ponds, lakes, marshes, muddy and sandy pools and backwaters of rivers (Ref. 5723). Feeds mainly on plant material but also on small larvae of insects. Its occurrence is related to those of the bivalve Anodonta cygnea and other freshwater mussels (Ref. 30578). Known for its habit of laying its eggs in the mantle cavity of freshwater mussels (Ref. 1739). Reproduction takes place from April to June (Ref. 30578).

Life cycle and mating behavior Maturities | Riproduzione | Spawnings | Egg(s) | Fecundities | Larve

Hides eggs in live invertebrates such as mussels, crabs or ascidians. The female develops a conduit ovipositor by which it deposits its ovules between the gills of the bivalve. The male then comes to deposit its seed close to the respiratory opening of the bivalve; at the interior of which fertilization takes place. The male keeps the eggs and alevins until they leave the refuge. In exchange, the fish rids the bivalve of its parasites (Ref. 30578). The young leave the mussel about 28 days after hatching, having reached a length of about 10 mm (Ref. 41678).

Main reference Upload your references | Bibliografia | Coordinatore | Collaboratori

Bogutskaya, N.G. and A.M. Komlev, 2001. Some new data to morphology of Rhodeus sericeus (Cyprinidae: Acheilognathinae) and a description of a new species, Rhodeus colchicus, from West Transcaucasia. Proc. Zool. Inst. 287:81-97. (Ref. 50154)

IUCN Red List Status (Ref. 130435)

Least Concern (LC) ; Date assessed: 15 April 2020

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

Pesca: di nessun interesse; Acquario: Acquari pubblici

FAO(Publication : search) | FishSource |

Informazioni ulteriori

Trophic ecology
Prede
Diet compositions
Food consumptions
Food rations
Predatori

Ecology
Ecologia
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Population dynamics
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Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversions
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Life cycle
Riproduzione
Maturities
Fecundities
Spawnings
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Egg(s)
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Larve
Dinamica popolazioni larvali

Distribution
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Anatomy
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Cervelli
Otoliths

Physiology
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Nutrients
Oxygen consumptions
Swimming type
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Visual pigment(s)
Suoni dei Pesci
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Toxicities (LC50s)

Genetics
Genetica
Electrophoreses
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Human related
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Profili di acquacoltura
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Ciguatera cases
Stamps, coins, misc.

Outreach
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Nomi Comuni
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References
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Check for Aquarium maintenance | Check for Species Fact Sheets | Check for Aquaculture Fact Sheets

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Fonti Internet

Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00912 (0.00496 - 0.01677), b=3.07 (2.91 - 3.23), in cm Total Length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).

Trophic level (Ref. 69278): 2.1 ±0.08 se; based on food items.

Resilienza (Ref. 120179): Medio, tempo minimo di raddoppiamento della popolazione 1.4 - 4.4 anni (tm=2; tmax=5; Fec=100).

Fishing Vulnerability (Ref. 59153): Low vulnerability (19 of 100).

Rhodeus sericeus (Pallas, 1776)