Origin
Pterygoplichthys multiradiatus is native to South America. Orinoco sailfin catfish were likely introduced to the United States as escapes or releases from aquarium fish farms.

Life Cycle
P. multiradiatus are approximately 70 cm in length and can be identified by the number of rays in the dorsal fin because 9-14 indicate Pterygoplichthys while 7-8 indicate Hypostomus. P. multiradiatus is nocturnal and feeds on algae, worms, insect larvae, and other bottom-dwelling animals. Male Pterygoplichthys create burrows in riverbanks to attract a female where she will lay and guard her eggs.

Distribution
P. multiradiatus is established in Florida and Hawaii.

Control Efforts
The effects of P. multiradiatus is unknown. However, Orinoco sailfin catfish have the potential to affect siltation and compete with natives.

https://www.fws.gov/injuriouswildlife/pdf_files/Pterygoplichthys_%20multiradiatus_WEB_8-28-12.pdf
https://nas.er.usgs.gov/queries/FactSheet.aspx?speciesID=768
 

Resources

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• Florida's Exotic Wildlife Species Detail - Florida Fish and Wildlife Conservation Commission

Selected Images

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Maps

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Invasive Listing Sources

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• Everglades Cooperative Invasive Species Management Area
• Florida Invasive Species Partnership

References

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Common Name Reference: Integrated Taxonomic Information System on-line database.

Scientific Name Reference: Integrated Taxonomic Information System on-line database.