Genetic studies of cichlid fishes suggest that interspecies hybrids played a prominent role in their evolution. Analysis of a unique fossil cichlid from the Upper Miocene of East Africa now provides further support for this ...
Archaeology
May 2, 2017
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Why do animals help raise offspring that aren't their own? A new study by an international team of researchers from Sweden, Canada and the UK shows that fish cooperate to raise another fish's offspring to reduce their own ...
Plants & Animals
Apr 19, 2017
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14
(Phys.org)—A trio of researchers with the University of Bern in Switzerland has found that at least one species of fish communicates with others of its kind using chemicals in its urine. In their paper published in the ...
The males of some species go to extraordinary lengths to attract females – but some simply cheat. Take African cichlid fish. Many males build underwater "sandcastle" structures that the females use to judge the quality ...
Plants & Animals
Jan 30, 2017
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Cichlid fish from a tiny volcanic crater lake in Africa have been caught in the act of sympatric speciation, whereby a new species evolves when there is no geographic barrier to physically separate the new species from the ...
Plants & Animals
Dec 18, 2015
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147
(Phys.org)—A team of researchers affiliated with several universities in the U.S. has conducted a drilling study of Lake Malawi in South-East Africa and suggest their findings may help explain the large number of cichlid ...
(Phys.org)—A small team of researchers with members from the U.S. and Switzerland has found an example of a fish that did not always benefit in the end from an evolutionary change. In their paper published in the journal ...
With intruders lurking everywhere, the volcanic crater lakes of Nicaragua can be a dangerous place to raise a family, especially if you're a fish.
Plants & Animals
Aug 18, 2015
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40
For many male African cichlid fish, the best way to attract a mate is to build a really nice pit or sand castle on a lake bottom.
Evolution
Mar 19, 2015
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New research shows that courtship rituals evolve very fast in cichlid fish in Lake Malawi. Whenever species evolve to feed at different depths, their courtship evolves as well. In the shallows where the light is good, males ...
Ecology
Mar 18, 2015
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