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Freshwater Fishes Of The Timika Region New Guinea
New Guinea harbours one of the world's largest and most exciting fish faunas. Approximately 2,500 species are currently known from the island, most of which inhabit surrounding coral reefs. Although forming a small portion of the overall fauna, the fishes represent a fascinating and highly unique community. Nearly three-quarters of the species are found only in New Guinea, and many are confined to a single lake or relatively small isolated catchments. The island's freshwater fishes are relatively well documented, although there is still a critical need for basic exploration and determination of species distributions, particularly in Indonesian Papua (currently the province of Irian Jaya). The fauna is comparatively small, consisting of about 375 species. This figure pales in comparison to the more than 2.000 fishes known from the Amazon Basin, the world's richest location for freshwater fishes. But what the New Guinea fauna lacks in numbers is more than compensated for by the presence of numerous unique species that are wonderfully adapted to their environment. One can imagine the hardships by expedition members, all for the sake of biological discovery. Today we comfortably travel via car from Amamapare Port Site to Tembagapura in less than three hours, but in 1907, it would have required several weeks for the Lorentz expedition to establish their camps, penetrating as 150 km inland. In spite of the difficulties they made very comprehensive fish collections, including at least 20 new species. Indeed, their specimens and data (reported by Weber, 1913 still provide a basic for our knowledge of the southern New Guinea ichthyofauna. Most of the 62 species recorded by the Lorentz expeditions also occur in the Timika region.
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