Pupfish form evolutionary 'mountain ranges'
Barely kept and difficult to maintain, the pupfishes of the genus Cyprinodon are of outsized interest to evolutionary biologists. Their isolated desert waters are the reason.
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Barely kept and difficult to maintain, the pupfishes of the genus Cyprinodon are of outsized interest to evolutionary biologists. Their isolated desert waters are the reason.
Mark Duffill, a self-confessed loachaholic of thirty years, on keeping and finally breeding the dwarf chain loach.
Freshwater conservation is set to become one of the most pressing environmental problems of the coming decades. A look at one partnership working on it in the American desert.
Mike Ophir on the loaches of the 'Modesta complex' — long treated as the community tank's cleaning crew, and still poorly served by what is known of their care.
Colin Dunlop on the dwarf among snakeheads. At around 10 cm, Channa orientalis asks far less of a tank than the metre-long relatives that give the genus its reputation.