Common name: redeye tetra
available through www.itis.gov
Identification: The genus is in need of systematic revision. Géry (1977) provided a key and photographs. Color photographs appeared in Axelrod et al. (1985) and Sakurai et al. (1993). This species closely resembles the glass tetra Moenkhausia oligolepis in body form and coloration but has fewer lateral line scales.
Size: 7 cm SL.
Native Range: Tropical America, in Paranaíba, São Francisco, upper Parana, Paraguay and Uruguay River basins (Géry 1977, Lima et al. 2003).
Hydrologic Unit Codes (HUCs) Explained
Puerto Rico &
Interactive maps: Point Distribution Maps
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 Moenkhausia sanctaefilomenae are found here.
Table last updated 10/22/2021
† Populations may not be currently present.
Means of Introduction: These fish were either released or escaped from a fish farm, or were aquarium releases.
Status: Failed in 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., 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.
Géry, J. 1977. Characoids of the world. Tropical Fish Hobbyist Publications, Inc., Neptune City, NJ.
Lima, F.C.T., L.R. Malabarba, P.A. Buckup, J.F. Pezzi da Silva, R.P. Vari, A. Harold, R. Benine, O.T. Oyakawa, C.S. Pavanelli, N.A. Menezes, C.A.S. Lucena, M.C.S.L. Malabarba, Z.M.S. Lucena, R.E. Reis, F. Langeani, C. Moreira, et al. 2003. Genera Incertae Sedis in Characidae. p. 106-168. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil.
Leo Nico, and Bill Loftus
Revision Date: 7/10/2012
Peer Review Date: 7/10/2012
Leo Nico, and Bill Loftus, 2021, Moenkhausia sanctaefilomenae (Steindachner, 1907): U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, https://nas.er.usgs.gov/queries/FactSheet.aspx?SpeciesID=424, Revision Date: 7/10/2012, Peer Review Date: 7/10/2012, Access Date: 10/22/2021
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.