Common name: pearl eartheater
Synonyms and Other Names: pearl cichlid
available through www.itis.gov
Identification: A few distinguishing characteristics were provided in Sterba (1973). A key and distinguishing characteristics, in Portuguese, were also presented by Britski et al. (1984). Color photographs appeared in Loiselle (1980b), Axelrod et al. (1985), and Axelrod (1993).
Size: 30 cm SL (Loiselle 1980).
Native Range: Tropical America. Widely distributed in rivers along the Atlantic Coast of Brazil from Bahia State to mouth of Río de la Plata, Argentina (Axelrod 1993), including Rio São Francisco (Britski et al. 1984).
Hydrologic Unit Codes (HUCs) Explained
Puerto Rico &
Interactive maps: Point Distribution Maps
Means of Introduction: Probable fish-farm escape.
Status: Reported from Florida.
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)
Axelrod, H. R. 1993. The most complete colored lexicon of cichlids. Tropical Fish Hobbyist Publications, Inc., Neptune City, NJ.
Axelrod, H. R., W. E. Burgess, N. Pronek, and J. G. Walls. 1985. Dr. Axelrod's atlas of freshwater aquarium fishes. Tropical Fish Hobbyist Publications, Inc., Neptune City, NJ.
Britski, H. A., Y. Sato, and A. B. S. Rosa. 1984. Manual de identificação de peixes da região de Tres Marias (com chaves de identificação para os peixes da Bacia do São Francisco). Camara dos Deputados and Companhia de Desenvolvimento do Vale do São Francisco (CODEVASF), Brasília, Brasil. 143 pp.
Courtenay, W. R., Jr., and D. A. Hensley. 1979a. Survey of introduced non-native fishes. Phase I Report. Introduced exotic fishes in North America: status 1979. Report Submitted to National Fishery Research Laboratory, U.S. Fish and Wildlife Service, Gainesville, FL.
Courtenay, W. R., Jr., H. F. Sahlman, W. W. Miley, II, and D. J. Herrema. 1974. Exotic fishes in fresh and brackish waters of Florida. Biological Conservation 6(4):292-302.
Loiselle, P. V. 1980. South American eartheaters Geophagus the genus and its allies. Freshwater and Marine Aquarium 3(6)(June):23-29, 86-87, 89-90.
Smith-Vaniz, W. F., J. D. Williams, L. G. Nico, and W. Loftus. Key to the cichlid fishes of Florida. Unpublished mimeograph (in prep).
Sterba, G. 1973. Freshwater fishes of the world. English translation and revision from German. Two volumes. Tropical Fish Hobbyist Publications, Inc., Neptune City, NJ.
Revision Date: 6/3/2004
Peer Review Date: 4/1/2016
Nico, L., 2019, Geophagus brasiliensis (Quoy and Gaimard, 1824): U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, https://nas.er.usgs.gov/queries/FactSheet.aspx?speciesID=454, Revision Date: 6/3/2004, Peer Review Date: 4/1/2016, Access Date: 1/22/2019
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.