Common name: Seminole Killifish
available through www.itis.gov
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).
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.
Table last updated 6/26/2022
† 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.
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.
Pam Fuller, and Matt Neilson
Revision Date: 5/21/2019
Peer Review Date: 1/31/2013
Pam Fuller, and Matt Neilson, 2022, 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: 6/27/2022
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.