Distribution
H. littorale has the widest distribution of any callichthyid. It is present in all of South America east of the Andes and north of Buenos Aires, including the Orinoco, Trinidad, coastal rivers of the Guianas, Amazon River drainage, Paraguay, lower Paraná River, and coastal systems in southern Brazil. It ranges from Venezuela and Guyanas to Argentina.
One single lot is known from the upper Paraná River and the São Francisco River drainage; it has been suggested that these occurrences may represent introduced populations. This species has also been introduced into the Indian River Lagoon of Florida.
Read more about this topic: Hoplosternum Littorale
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