Old fish, new fish, red fish, blue fish cichlid fish appear to be splitting into two species

Some cichlid fish see red better while others only have eyes for blue. This difference in vision, observed in fish in an African lake, could be pushing red-bodied cichlids to branch off from their blue-bodied brethren and to form a new species.

If so, it would be the first time that scientists have caught evolution in the act of creating a new species because of changes in sense organs. For one species to diverge into two, some barrier must prevent two groups of individuals from interbreeding. Physical separation of two groups and changes to reproductive organs are two of the wedges that scientists have shown can drive the formation of new species, and evolutionary biologists are always keen to discover new mechanisms.

yes, especially in the Church of Darwin...fortunately, the christian faith says that God created fish, and wow, what do you know, the fish are there, back then, today, and tomorrow....science showing God’s creation of fish.....are still fish....

I am only referring to the very definition of “species.”

If you’re one to make up new definitions of words, well, that’s hardly what conservatives do.


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Thanks Soliton. Topic is from 10/1/2008. Just to the catalog, not sending a general distribution. Evolution in Your Face by Patrick Huyghe Omni Lake Victoria, Africa's largest lake, is home to more than 300 species of cichlids. These fish, which are popular in aquariums, are deep-bodied and have one nostril, rather than the usual two, on each side of the head. Seismic profiles and cores of the lake taken by a team headed by Thomas C. Johnson of the University of Minnesota, reveal that the lake dried up completely about 12,400 years ago. This means that the rate of speciation of cichlid fishes has been extremely rapid: something on average of one new species every 40 years! 12,400 years ago? Hydrologic cycle came to a screeching whoa for some reason, hmm, what could it have been? To all -- please ping me to other topics which are appropriate for the GGG list.

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