Register of international transfers of inland fish species.
List is of transfers of inland fish species between countries, where the transfer was notified to the FAO Fisheries Department before 1st May 1981. That statement and the Introduction are in English, French or Spanish but the main part is in English only. For each species, tables show the countries to and from which the species was transferred, native range of the species, the date of transfer, whether and where the species became established, purpose of the transfer, and remarks. Most were introduced for aquaculture, others for subsistance fisheries, sport fishing, ornament, extraction of pituitary material, hybridization, as a feed fish, for control of weed, snails or mosquitoes or by accidental introduction or escape. Appendices give names and addresses of 44 correspondents in different countries, an index of 129 countries, areas or groups of countries into which fish have been transferred and a taxonomic list of 170 species of 33 genera transferred. Species range from the very large Arapaima gigas taken from Peru to Cuba in 1973 for commercial fishery and maintained in ponds, to other species which have become useful or become pests, which have filled a vacant niche, or which have eliminated local species, which have failed, or which are to be eliminated.