The Nonindigenous Occurrences section of the NAS species profiles has a new structure. The section is now dynamically updated from the NAS database to ensure that it contains the most current and accurate information. Occurrences are summarized in Table 1, alphabetically by state, with years of earliest and most recent observations, and the tally and names of drainages where the species was observed. The table contains hyperlinks to collections tables of specimens based on the states, years, and drainages selected. References to specimens that were not obtained through sighting reports and personal communications are found through the hyperlink in the Table 1 caption or through the individual specimens linked in the collections tables.

Peckoltia sp.
Peckoltia sp.
(clown pleco)

Copyright Info
Peckoltia sp. Miranda Ribeiro, 1912

Common name: clown pleco

Taxonomy: available through www.itis.govITIS logo

Identification: Peckoltia includes about 12 species; the group is in need of taxonomic revision (Armbruster 1997). Distinguishing characteristics of the genus and a key to loricariid genera were provided by Burgess (1989) and Armbruster (1997). Color photographs appeared in Sands (1984), Burgess (1989), and Ferraris (1991). Armbruster (1997) noted that it is commonly confused with some Panaque; as such, he concluded that the aquarium literature should be viewed with skepticism.

Size: 22 cm.

Native Range: Tropical America. The Amazon and Orinoco river basins (Armbruster 1997).

Hydrologic Unit Codes (HUCs) Explained
Interactive maps: Point Distribution Maps

Nonindigenous Occurrences: A species identified as Peckoltia was taken from Manoa Stream, Oahu, Hawaii, during 1990-1991 surveys by the state; there was also an earlier unconfirmed report from Kaukonahua Stream, Oahu, in 1989 (Devick 1991b). There are many occurences on Oahu (Mundy 2005).

Table 1. States with nonindigenous occurrences, the earliest and latest observations in each state, and the tally and names of HUCs with observations†. Names and dates are hyperlinked to their relevant specimen records. The list of references for all nonindigenous occurrences of Peckoltia sp. are found here.

StateFirst ObservedLast ObservedTotal HUCs with observations†HUCs with observations†

Table last updated 5/26/2024

† Populations may not be currently present.

Means of Introduction: Probable aquarium release.

Status: Reported from Hawaii.

Impact of Introduction: The impacts of this species are currently unknown, as no studies have been done to determine how it has affected ecosystems in the invaded range. The absence of data does not equate to lack of effects. It does, however, mean that research is required to evaluate effects before conclusions can be made.

Remarks: Many members of this genus are popular aquarium fishes. However, some Peckoltia species are difficult to separate from members of the loricariid genus Panaque. As such, the Hawaiian record may actually be a Panaque species. Panaque maccus is the common clown pleco in the ornamental fish trade (J. Armbruster, personal communication). There are no known voucher specimens.

References: (click for full references)

Burgess, W. E. 1989. An atlas of freshwater and marine catfishes: a preliminary survey of the Siluriformes. Tropical Fish Hobbyist Publications, Inc., Neptune City, NJ.

Devick, W. S. 1991b. Patterns of introductions of aquatic organisms to Hawaiian freshwater habitats. Pages 189-213 in new directions in research, management and conservation of Hawaiian freshwater stream ecosystems. Proceedings of the 1990 symposium on freshwater stream biology and fisheries management, Division of Aquatic Resources, Hawaii Department of Land and Natural Resources.

Ferraris, C. J., Jr. 1991. Catfish in the aquarium. Tetra Press, Morris Plains, NJ.

Other Resources:
FishBase Summary

Author: Nico, L.

Revision Date: 5/9/2019

Peer Review Date: 4/20/2006

Citation Information:
Nico, L., 2024, Peckoltia sp. Miranda Ribeiro, 1912: U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, https://nas.er.usgs.gov/queries/FactSheet.aspx?SpeciesID=765, Revision Date: 5/9/2019, Peer Review Date: 4/20/2006, Access Date: 5/26/2024

This information is preliminary or provisional and is subject to revision. It is being provided to meet the need for timely best science. The information has not received final approval by the U.S. Geological Survey (USGS) and is provided on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from the authorized or unauthorized use of the information.


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Citation information: U.S. Geological Survey. [2024]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [5/26/2024].

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