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The Cichlids of Nicaragua

The rivers and lakes of Nicaragua, with the wonderful underwater world of the Nicaraguan crater lakes, where sympatric evolution is leading their cichlid fauna in unsuspecting ways. Narrated by one of the top Central American Cichlid authorities in the world, Willem Heijns, who spent hundreds of hours diving and sailing the rivers and roads of this beautiful country, documenting and filming the fascinating Nicaragua cichlid fauna

By Willem Heijns, 2007.
Willem Heijns, 2005

A Convict from the Volcano

Willem Heinjs has documented in this article the presence of a beautiful strain of Cryptoheros nigrofasciatus living at the base of The ConcepciĆ³n volcano in the Ometepe island of lake Nicaragua. Of more interest even is a population of Tomocichla tuba found in this small habitat. A lovely travel log that makes you dream about this wonderful place.

Article statistics: 1,546 words, 8 color illustrations, 1,112 kb pdf size.

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A Convict from the Volcano

Close Encounters of the Watery Type, Diving in the Crater-lakes of Nicaragua

The wonderful underwater world of the Nicaraguan crater lakes, where sympatric evolution is leading their cichlid fauna in unsuspecting ways, by one of the top Central American Cichlid authorities in the world, Willem Heijns, who spent hundreds of hours filming this behavior of this fascinating fauna.

Article statistics: 3,617 words, 12 color illustrations, 3,437 kb pdf size.

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Close Encounters of the Watery Type, Diving in the Crater-lakes of Nicaragua

Midas cichlids in all shapes and sizes

The Nicaraguan crater lake fauna is being uncovered and many new questions arise as this happens. Not anymore are Amphilophus citrinellus and A. labiatus the only species we knew, but an incredibe assortment of forms that could potentially derive into up to 40 species is teaching us about how convergent and sympatric evolution work.

Article statistics: 2,547 words, 19 color illustrations, 4,332 kb pdf size.

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Midas cichlids in all shapes and sizes

More Close Encounters, Through the Glass Clearly

Observations in aquarium of the complex and still poorly understood cichlid fauna of the wonderful Nicaraguan crater-lakes, with descriptions of first time observed behavior for some of the species, through the glass clearly!.

Article statistics: 3,051 words, 13 color illustrations, 1,761 kb pdf size.

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More Close Encounters, Through the Glass Clearly

The Rivers of Nicaragua: More to it than Crater lakes?

Nicaragua is more than crater lakes, and the difficult to access northern area had been poorly explorated in terms of fish. Willlem Heijs tells us about the result of his explorations into this unkown area. Is it all discovered?.

Article statistics: 3,011 words, 8 color illustrations, 1,085 kb pdf size.

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The Rivers of Nicaragua: More to it than Crater lakes?

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