To see how harassment affects the female social bonds, the researchers put each of three pairs of small guppies (a random mix of females and small males) into a transparent cylinder, with all ...

TALLAHASSEE, Fla. -- When it comes to choosing a mate, female guppies often go for the mates with the flashiest, most interesting color patterns. But why is that? Turns out, it's all about psychology.

‘If you are surrounded by ugly friends, you look better’ London: When it comes to mating, guppies treasure their ugly friends — because they look so good by comparison. An article published on ...