Common name: Gulf Opaleye
Synonyms and Other Names: (Gulf opal eye).
available through www.itis.gov
Identification: Miller and Lea (1972); Thomson et al. (1979); Fischer et al. (1995).
Size: 46 cm.
Native Range: Marine; San Francisco to Cape San Lucas, Baja California (Miller and Lea 1972). Gulf of California (Fischer et al. 1995).
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 Girella simplicidens are found here.
Table last updated 1/19/2021
† Populations may not be currently present.
Means of Introduction: Intentionally stocked. Seven fish obtained from San Felipe, Mexico, were stocked (Walker et al. 1961).
Status: The introduction failed to produce a viable population and the species is extirpated in the Salton Sea.
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)
Dill, W.A., and A.J. Cordone. 1997. History and status of introduced fishes in California, 1871-1996. California Department of Fish and Game Fish Bulletin, volume 178.
Fischer, W., F. Krupp, W. Schneider, C. Sommer, K.E. Carpenter, and V.H. Niem. 1995. Guía FAO para la identificatión de especies para los fines de la pesca. Pacifico centro-oriental. Volumen II. Vertebrados - Parte 1. Vol. II: 647-1200. Roma, FAO.
Miller, D.J., and R.N. Lea. 1972. Guide to the coastal marine fishes of California. Fish Bulletin of the California Department of Fish and Game 157:1-235.
Thomson, D.A., L.T. Findley, and A.N. Kerstitch. 1979. Reef Fishes of the Sea of Cortez. John Wiley and Sons, New York.
Walker, B.W., R.R. Whitney, and G.W. Barlow. 1961. Fishes of the Salton Sea. 77-92 in B.W. Walker, ed. The ecology of the Salton Sea, California, in relation to the sport fishery of California. Fish Bulletin of the California Department of Fish and Game 113.
Revision Date: 1/30/2012
Peer Review Date: 1/30/2012
Fuller, P., 2021, Girella simplicidens Osburn and Nichols, 1916: U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, https://nas.er.usgs.gov/queries/FactSheet.aspx?SpeciesID=752, Revision Date: 1/30/2012, Peer Review Date: 1/30/2012, Access Date: 1/19/2021
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.