Gravid female Malawian Pseudotropheus cichlids spent significantly more time
with males that they subsequently chose as mates, indicating that time spent near a male
is a valid and accurate method of measuring female preference. Furthermore, females
preferred to mate with males that had longer pelvic fins and a larger number of eggspots
on their anal fins. In some instances, females chose to mate with both of the males with
which they were presented, possibly because they were unable to discriminate between them.