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illustration of yellow fish with red stripe down its back
Can These Fish Do Math?
Scientists find that two species can be trained to distinguish quantities that vary by one.
Can These Fish Do Math?
Can These Fish Do Math?

Scientists find that two species can be trained to distinguish quantities that vary by one.

Scientists find that two species can be trained to distinguish quantities that vary by one.

cichlid
Developing African cichlid stained to examine craniofacial structure
Image of the Day: Cichlid Cranium
Nicoletta Lanese | Jul 25, 2019 | 1 min read
Maternal care for the fish alters the structure of their developing heads.
Image of the Day: Hold My Brood
The Scientist Staff and The Scientist Staff | May 9, 2018 | 1 min read
Cuckoo catfish trick cichlids into caring for their eggs in a strategy known as brood parasitism.
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