An unspoken frustration for evolutionary biologists over the past 100 years, says Craig Albertson at the University of Massachusetts Amherst, is that genetics can only account for a small percentage of variation in the physical ...
Evolution
Aug 1, 2017
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Scientists show that the extraordinary diversity of cichlid fish in Africa's Lake Victoria was made possible by "genetic recycling"—repeated cycles of new species appearing and rapidly adapting to different roles in the ...
Evolution
Sep 29, 2023
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(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 ...
Fish will mate with a species outside their own if the male's colouring is attractive enough or if the female can't see him properly, according to new research.
Plants & Animals
Dec 3, 2019
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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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42
Altruistic behavior is often seen as an exclusively human characteristic. However, behavioral research has uncovered numerous examples of altruistic behavior in the animal kingdom. In a new study, researchers at the University ...
Evolution
May 30, 2022
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950
A Case Western Reserve University scientist has played the lead role in identifying an invasive species related to one already threatening other fish in the waters of the southern United States.
Plants & Animals
Jun 8, 2021
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13
The evolution of new traits with novel functions has always posed a challenge to evolutionary biology. Studying the color markings of cichlid fish, Swiss scientists were now able to show what triggered these evolutionary ...
Evolution
Oct 9, 2014
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If you could hit the reset button on evolution and start over, would essentially the same species appear? Yes, according to a study of Caribbean lizards by researchers at the University of California, Davis, Harvard University ...
Plants & Animals
Jul 19, 2013
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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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Cichlids ( /ˈsɪklɨd/) are fishes from the family Cichlidae in the order Perciformes. Cichlids are members of a group known as the Labroidei along with the wrasses (Labridae), damselfish (Pomacentridae), and surfperches (Embiotocidae). This family is both large and diverse. At least 1,300 species have been scientifically described, making it one of the largest vertebrate families. New species are discovered annually, and many species remain undescribed. The actual number of species is therefore unknown, with estimates varying between 1,300 and 3,000.
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