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Margariscus margarita  (Cope, 1867)

Allegheny pearl dace
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Margariscus margarita   AquaMaps   Data sources: GBIF OBIS
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Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Cypriniformes (Carps) > Cyprinidae (Minnows or carps) > Leuciscinae
Etymology: Margariscus: Greek, margariskos = pearl (Ref. 45335).

Environment / Climate / Range Ecology

Freshwater; demersal.   Temperate; 45°N - 37°N

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

North America: Atlantic Slope of USA from Hudson River drainage in Vermont and New York, south to Potomac River drainage in Virginia; upper Ohio River drainages in south New York to West Virginia.

Length at first maturity / Size / Weight / Age

Maturity: Lm 9.4  range ? - ? cm
Max length : 16.0 cm TL male/unsexed; (Ref. 86798); common length : 9.3 cm TL male/unsexed; (Ref. 12193); max. reported age: 4 years (Ref. 12193)

Short description Morphology | Morphometrics

Margariscus margarita is almost identical to Margariscus nachtriebi but can be distinguished from this species by having larger scales and usually 50-62 lateral scales (Ref. 86798).

Biology     Glossary (e.g. epibenthic)

Inhabits pools of upland creeks and small rivers, and also ponds and lakes. Usually found over sand or gravel (Ref. 86798). Feeds on copepods, cladocerans, chironomids, beetles, filamentous algae, and Chara (Ref. 1998). Spawns during the spring (Ref. 1998).

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

Spawning occurs in shallow rivers with moderate current, on sand or gravel. Males maintained territories 20.3 cm wide (at least 1.83 m apart from each other). A ripe female is driven onto the territory. The male places his pectoral fin beneath the female's body anteriorly, and his caudal fin placed over the caudal peduncle of the female. The pair vibrates and the eggs are deposited. Females spawn with different males.

Main reference Upload your references | References | Coordinator | Collaborators

Page, L.M. and B.M. Burr, 2011. A field guide to freshwater fishes of North America north of Mexico. Boston : Houghton Mifflin Harcourt, 663p. (Ref. 86798)

IUCN Red List Status (Ref. 115185)

CITES (Ref. 94142)

Not Evaluated

Threat to humans

  Harmless




Human uses

Bait: occasionally
FAO(Publication : search) | FisheriesWiki | Sea Around Us

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Internet sources

Alien/Invasive Species database | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | ECOTOX | Faunafri | Fishes of Iran | Fishtrace | GenBank(genome, nucleotide) | GloBI | GOBASE | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Scirus | SeaLifeBase | Tree of Life | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoological Record

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.7500   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00617 (0.00309 - 0.01230), b=3.08 (2.91 - 3.25), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic Level (Ref. 69278):  3.1   ±0.36 se; Based on food items.
Resilience (Ref. 69278):  Medium, minimum population doubling time 1.4 - 4.4 years (tm=4).
Prior r = 0.45, 2 SD range = 0.2 - 1.01, log(r) = -0.8, SD log(r) = 0.4, Based on: 1 tgen, 1 tmax, 1 Fec records
Vulnerability (Ref. 59153):  Moderate vulnerability (38 of 100) .