Freshwater fish of Australia are limited to approximately 280 species, even though the Australian continent is larger than the contiguous United States. The small scale of species found in Australian inland waters is in some part due to the dry conditions of the continent. Rainfall is sporadic over much of the continent, and fish cannot live in many of the desert regions of South Australia and Western Australia. Most freshwater species are found in tropical or subtropical regions.
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| - Freshwater fish of Australia (en)
- Peces continentales de Australia (es)
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| - Freshwater fish of Australia are limited to approximately 280 species, even though the Australian continent is larger than the contiguous United States. The small scale of species found in Australian inland waters is in some part due to the dry conditions of the continent. Rainfall is sporadic over much of the continent, and fish cannot live in many of the desert regions of South Australia and Western Australia. Most freshwater species are found in tropical or subtropical regions. (en)
- Los peces de aguas continentales de Australia se limitan a alrededor de 280 especies, a pesar de la gran extensión de la isla. Una gran proporción de estas especies son endémicas de Australia. Es el caso de las familias , y , las cuales dominan muchos de sus sistemas de agua dulce, en contraste con el hemisferio norte, donde la ictiofauna de agua dulce está abrumadoramente dominada por la familia de los ciprínidos; no hay ciprínidos autóctonos de Australia. (es)
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| - Freshwater fish of Australia are limited to approximately 280 species, even though the Australian continent is larger than the contiguous United States. The small scale of species found in Australian inland waters is in some part due to the dry conditions of the continent. Rainfall is sporadic over much of the continent, and fish cannot live in many of the desert regions of South Australia and Western Australia. Most freshwater species are found in tropical or subtropical regions. A large proportion of freshwater species are endemic to Australia. The family Percicthyidae (temperate perches) and other families suspected in reality to lie within it (e.g. Gadopsidae, Nannopercidae) have risen to prominence in and dominate many of its freshwater systems, in contrast to the Northern Hemisphere where freshwater fish faunas are overwhelmingly dominated by the carp family, Cyprinidae. (No cyprinid species is native to Australia). Due to the illegal introduction of carp (Cyprinus carpio), Cyprinidae is now present in a destructive form in Australia. The Galaxiidae have become significant in scale in Australia, most of the world's Galaxias species are found in the continent and neighbouring New Zealand. The Murray-Darling Basin is one significant freshwater system of Australia. It drains approximately 13% of the continent and contains some of Australia's most significant freshwater fish species including the Murray Cod, Australia's largest freshwater fish. Australian freshwater fish have not fared well since European settlement of Australia in 1788. The majority of Australian freshwater fishes are poorly understood and are under threat due to human activities such clearing of riparian vegetation and siltation associated with agricultural practices, snag removal, overfishing, river regulation through dams and weirs, introduced fish and diseases. Two native fish populations that may have been separate species or sub-species, the Richmond River cod and the Brisbane River cod, are extinct, and a number of other species are listed as endangered or critically endangered. (en)
- Los peces de aguas continentales de Australia se limitan a alrededor de 280 especies, a pesar de la gran extensión de la isla. Una gran proporción de estas especies son endémicas de Australia. Es el caso de las familias , y , las cuales dominan muchos de sus sistemas de agua dulce, en contraste con el hemisferio norte, donde la ictiofauna de agua dulce está abrumadoramente dominada por la familia de los ciprínidos; no hay ciprínidos autóctonos de Australia. Debido a la introducción ilegal de la carpa (Cyprinus carpio), la familia de los ciprínidos está presente en Australia y es responsable de importantes daños ambientales y económicos. La mayor parte de las especies de la familia Galaxiidae también se encuentran en Australia y su vecina Nueva Zelanda. El sistema de agua dulce más importante de Australia es la cuenca del Murray-Darling, que drena aproximadamente el 13% del continente y contiene algunas de las especies de peces de agua dulce más importantes de Australia, incluyendo el bacalao Murray, el mayor pez de agua dulce de Australia. El estudio de los peces de agua dulce australianos no comenzó hasta la colonización europea de Australia, en 1788. La mayoría de los peces de agua dulce australianos son poco conocidos y están en peligro debido a las actividades humanas como la limpieza de la vegetación ribereña y la sedimentación asociada a las prácticas agrícolas, la sobrepesca, la regulación de los cauces de ríos a través de presas y diques y las enfermedades introducidas. Dos poblaciones de peces nativos: el bacalao del río Richmond y el bacalao del río Brisbane, se han extinguido, y un importante número de otras especies están en peligro de extinción o en peligro crítico. (es)
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