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.

Fundulus seminolis
Fundulus seminolis
(Seminole Killifish)
Native Transplant

Copyright Info
Fundulus seminolis Girard, 1859

Common name: Seminole Killifish

Taxonomy: available through www.itis.govITIS logo

Identification: The Seminole Killifish is one of the largest species of Fundulus in North America (to 16 cm TL). It can be distinguished from other large species of Fundulus (e.g., Gulf killifish F. grandis, banded killifish F. diaphanus, northern studfish F. catenatus) by a combination of color patterns and fin ray counts. Seminole Killifish are metallic green in color with several horizontal rows of small black spots. Females may have 15-20 dark green bars along side (often faint).  Fin ray counts (from Page and Burr 2011) are shown in the table below.

Species Dorsal fin rays Anal fin rays Lateral scales
F. seminolis 16-17 13 50-55
F. grandis 10-14 9-11 32-37
F. diaphanus 13-15 10-12 35-50
F. catenatus 12-17 13-18 30-52


Size: 16 cm.

Native Range: Peninsular Florida from St. Johns drainage on the Atlantic to New drainage in the Gulf, south to just below Lake Okeechobee (Page and Burr 2011).

Native range data for this species provided in part by NatureServe NS logo
Hydrologic Unit Codes (HUCs) Explained
Interactive maps: Point Distribution Maps

Nonindigenous Occurrences:

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 Fundulus seminolis are found here.

StateFirst ObservedLast ObservedTotal HUCs with observations†HUCs with observations†
FL196619661St. Andrew-St. Joseph Bays
SC200920122Cooper; Lake Marion

Table last updated 6/21/2024

† Populations may not be currently present.

Means of Introduction: Possible bait bucket release.

Status: Reported, but failed, in Florida. Established in South Carolina

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: Voucher specimens: UF 64680 (=FSU 14680); NCSM 55436.

References: (click for full references)

Page, L.M., and B.M. Burr. 2011. Field guide to freshwater fishes of North America north of Mexico. Peterson Field Guides series. Houghton Mifflin Harcourt, Boston, MA.

Swift, C.C., C.R. Gilbert, S.A. Bortone, G.H. Burgess, and R.W. Yerger. 1986. Zoogeography of the fishes of the southeastern United States: Savannah River to Lake Pontchartrain. 213-266 in C.H. Hocutt and E.O. Wiley, eds. The zoogeography of North American freshwater fishes. John Wiley and Sons, New York, NY.

FishBase Summary

Author: Pam Fuller, and Matt Neilson

Revision Date: 5/21/2019

Peer Review Date: 1/31/2013

Citation Information:
Pam Fuller, and Matt Neilson, 2024, Fundulus seminolis Girard, 1859: U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, https://nas.er.usgs.gov/queries/FactSheet.aspx?SpeciesID=692, Revision Date: 5/21/2019, Peer Review Date: 1/31/2013, Access Date: 6/21/2024

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.


The data represented on this site vary in accuracy, scale, completeness, extent of coverage and origin. It is the user's responsibility to use these data consistent with their intended purpose and within stated limitations. We highly recommend reviewing metadata files prior to interpreting these data.

Citation information: U.S. Geological Survey. [2024]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [6/21/2024].

Contact us if you are using data from this site for a publication to make sure the data are being used appropriately and for potential co-authorship if warranted.

For general information and questions about the database, contact Wesley Daniel. For problems and technical issues, contact Matthew Neilson.