Common name: mangrove goby
Synonyms and Other Names: Mugilogobius parvus (Oshima 1919)
available through www.itis.gov
Identification: Identification key to Hawaiian marine gobies in Greenfield and Randall (2004).
Size: 6 cm TL
Native Range: Tropical Indo-Pacific: Indonesia, Papua New Guinea, Phillippines, Taiwan, Ryukyu Islands, Kosrae (Caroline Islands), Guam (Greenfield and Randall 2004)
The mangrove goby is established on the island of Oahu, Hawaii (Staples and Cowie 2001; Greenfield and Randall 2004)
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 Mugilogobius cavifrons are found here.
Table last updated 9/30/2019
† Populations may not be currently present.
Ecology: Generally occurs in shallow mangrove, brackish, and freshwater habitats (Greenfield and Randall 2004). Mugiligobius cavifrons is highly carnivorous and will consume any prey item smaller than itself. In Hawaii, its diet includes ostracods, chironomid larvae, juvenile fishes, and small crustaceans (Englund et al 2000).
Means of Introduction: Ballast water.
Status: Established in Oahu, Hawaii. Not known from any other islands in Hawaiian archipelago.
Impact of Introduction: This species is highly aggressive and predatory; eats native species during their migration from the ocean to streams; readily consumes juvenile 'o'opu nakea (a native stream goby, Awaous guamensis). Likely competes with native gobies (particularly A. guamensis) for both food and space (Englund et al 2000). Displays little climbing ability, cannot pass waterfalls.
References: (click for full references)
Englund, R.A., D.J. Preston, R. Wolff, S.L. Coles, L.G. Eldredge, and K. Arakaki. 2000. Biodiversity of freshwater and estuarine communities in lower Pearl Harbor, Oahu, Hawaii with observations on introduced species. Bishop Museum Technical Report no. 16. Hawaii Biological Survey, Bishop Museum, Honolulu, HI.
Greenfield, D.W., and J.E. Randall. 2004. The marine gobies of the Hawaiian Islands. Proceedings of the California Academy of Sciences 55:498-549.
Larson, H.K. 2001. A revision of the gobiid fish genus Mugilogobius (Teleostei: Gobioidei), and its systematic placement. Records of the Western Australian Museum Supplement 6:21-233.
Randall, J.E., J.L. Earle, T. Hayes, C. Pittman, M. Severns, and R.J.F. Smith. 1993. Eleven new records and validations of shore fishes from the Hawaiian Islands. Pacific Science 47:222-239.
Staples, G.W. and R.H. Cowie. 2001. Hawaii's Invasive Species. Bishop Museum, Honolulu, HI. 116 pp.
Revision Date: 4/20/2018
Peer Review Date: 4/1/2016
Neilson, M.E., 2020, Mugilogobius cavifrons (Weber, 1909): U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, https://nas.er.usgs.gov/queries/FactSheet.aspx?SpeciesID=2255, Revision Date: 4/20/2018, Peer Review Date: 4/1/2016, Access Date: 1/19/2020
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.