There are concerned, overprotective parents, and then there are cichlid fish. After a male cichlid fertilizes the female’s eggs, she holds her entire brood of embryos inside her mouth for two weeks ...

Cichlid fishes exhibit differing degrees of curiosity. The cause for this lies in their genes, as reported by researchers from the University of Basel in the journal Science. This trait influences the ...

Call it instinct, but something compels some animals to behave in certain ways, perhaps programs in their genes. Researchers have directly connected activities of genes with instinctive behavior in ...