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Pomacea megastoma

Giant Uruguay River Snail


Pomacea megastoma

(G. B. Sowerby I, 1825)
Caracol Gigante del Río Uruguay
Family: Ampullariidae
Order: Mesogastropoda
Class: Gastropoda
Phylum / Division: Mollusca
Kingdom: Animalia
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Synonyms: Asolene megastoma, Pomella megastoma.




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Description


Pomacea megastoma is a species of gastropod belonging to the family Ampullariidae.

The species is found in South America. The species inhabits freshwater environments.

Source: Wikipedia, article Pomacea megastoma. Content adapted from Wikipedia, available under the CC BY-SA 4.0 license. Accessed on 16/07/2026.





Geographic distribution


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Species photographs

Count: 9

Foto
Photography ID: 682243
  Adult
Playa Seré
Colonia
Uruguay
04/09/2026
Luis Mier
Foto
Photography ID: 482450
  Adult
Aguas dulces
Rocha
Uruguay
02/15/2022
Elina Cassinelli
Foto
Photography ID: 418131
  Egg
Yapeyú
Corrientes
Argentina
11/06/2020
Enzo Edgardo Ferreyra
Foto
Photography ID: 325637
  Egg
Yapeyú
Corrientes
Argentina
10/27/2018
Enzo Edgardo Ferreyra
Foto
Photography ID: 325502
♂ ♀  Adult
Yapeyú
Corrientes
Argentina
04/05/2018
Enzo Edgardo Ferreyra
Foto
Photography ID: 141872
  Adult
Delta del Paraná
Buenos Aires
Argentina
03/06/2016
Román Montero


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Species vocalizations

Last vocalizations published



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Species videos

Count: 2


Video ID: 5074
  Adult
Aguas dulces
Rocha
Uruguay
02/15/2022
Elina Cassinelli
Video ID: 5073
  Adult
Aguas dulces
Rocha
Uruguay
02/15/2022
Elina Cassinelli


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Species reports



 Detail of places sorted by number of records





Species records

Count: 10



Page 1 of 1
Record IDDateExact timeCountryProvince / departmentPlaceFilmedPhotographedRecorded vocalObservedHeardWounded or deadNumber of individualsUser or BibliographyDetail
245786809/04/2026UruguayColoniaDesembocadura arroyo las vacas, Playa SeréLuis Mier
225029621/02/2025ArgentinaEntre RíosRío Gualeguaychú (zona Costanera Sur), GualeguaychúRodolfo Julio Velazquez
154714715/02/2022UruguayRochaPequeña laguna o charco grande natural que se forma a la entrada a la playa, Aguas dulcesElina Cassinelli
149809918/11/2021UruguaySaltoAyuí, Salto -ciudadJulio Sebastián Gómez Barboza Silveira
130841206/11/2020ArgentinaCorrientesYapeyúEnzo Edgardo Ferreyra
90495927/10/2018ArgentinaCorrientesCosta del río Uruguay entre la vegetación costera, YapeyúEnzo Edgardo Ferreyra
90475405/04/2018ArgentinaCorrientesYapeyúEnzo Edgardo Ferreyra
41258306/03/2016ArgentinaBuenos AiresZona privada, Delta del ParanáRomán Montero
26764522/02/2011ArgentinaEntre RíosCosta del lago Salto Grande en campos de Lover y Capeletti (-30.86352 -57.8193), Colonia "la Matilde" (departamento Federación)Carlos M. Grassini
65909715/06/2008ArgentinaEntre RíosParque Nacional El PalmarNicolas Olejnik
Page 1 of 1

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Recommended citation
Please use the following reference when citing this species account.
EcoRegistros. 2026. Giant Uruguay River Snail (Pomacea megastoma) – Species account. Accessed from www.ecoregistros.org on 30/10/2026.