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The Nonindigenous Occurrences section of the NAS species profiles has a new structure. The section is now dynamically updated from the NAS database to ensure that it contains the most current and accurate information. Occurrences are summarized in Table 1, alphabetically by state, with years of earliest and most recent observations, and the tally and names of drainages where the species was observed. The table contains hyperlinks to collections tables of specimens based on the states, years, and drainages selected. References to specimens that were not obtained through sighting reports and personal communications are found through the hyperlink in the Table 1 caption or through the individual specimens linked in the collections tables.

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Common name: Malabar danio

Synonyms and Other Names: giant danio, Danio malabaricus 

Taxonomy: available through www.itis.gov

Identification: Recent systematic review and distinguishing characteristics were provided by Jayaram (1991) and Kullander (2001). A key, distinguishing characteristics, and figure were given in Talwar and Jhingran (1991). Color photographs of live fish appeared in Axelrod et al. (1985).

Size: 12 cm TL.

Native Range: Tropical Asia, southwestern India and Sri Lanka (Jayaram 1991).

Alaska	Hawaii	Puerto Rico & Virgin Islands	Guam Saipan

Hydrologic Unit Codes (HUCs) Explained
Interactive maps: Point Distribution Maps

Means of Introduction: The Hillsborough County, Florida, introductions were probably due to releases or escapes from local fish farms. The Nevada introduction likely represents the result of an aquarium release.

Status: Failed in Florida and Nevada.

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.

Remarks: The Malabar danio has long been popular in the aquarium trade and is widely available.

Voucher specimens: Florida (UF 98915); the Nevada specimen was reported as deposited at FAU (Courtenay, personal communication 1983), but that fish is now unavailable, possibly destroyed.

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 Hobbyists Publications, Inc, Neptune City, NJ. 780 pp.

Courtenay, W.R., Jr. and D.A. Hensley. 1979. Range expansion in southern Florida of the introduced spotted tilapia, with comments on its environmental impress. Environmental Conservation 6(1):149-151.

Courtenay, W.R., Jr., D.A. Hensley, J.N. Taylor, and J.A. McCann. 1984. Distribution of exotic fishes in the continental United States. IN W.R. Courtenay, Jr., and J.R. Stauffer, Jr., eds. Distribution, Biology and Management of Exotic Fishes. John Hopkins University Press Baltimore, MD. 41-77.

Courtenay, W.R., Jr., D.P. Jennings, and J.D. Williams. 1991. Appendix 2: Exotic Fishes IN Common names and scientific names of fishes from the United States and Canada. American Fisheries Society, Special Publication. 5th ed. 20.

Jayaram, K.C. 1991. Systematic status of Danio malabaricus (Pisces: Cyprinidae). Ichthyological Exploration of Freshwaters 2:109-112.

Kullander, F.F. 2001. Phylogeny and species diversity of the South and Southeast Asian cyprinid genus Danio Hamilton (Teleostei, Cyprinidae). Ph.D. Thesis-Stockholm University, Department of Zoology. p. 1-26. Sweden, Stockholm University, Department of Zoology.

Shafland, P.L. 1976. The continuing problem of non-native fishes in Florida. Fisheries 1(6):25.

Talwar, P.K. and A.G. Jhingran (editors). 1991. Inland fishes of India and adjacent countries. Two volumes. AA Balkema, Rotterdam, The Netherlands. 1158 p.

Other Resources:
US Fish and Wildlife Service Ecological Risk Screening Summary for Devario malabaricus

Author: Leo Nico, and Bill Loftus

Peer Review Date: 7/30/2012

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.