Sentences with phrase «mexican swordtails»
Not exact matches
To see if the presence of UV signals mattered to female swordtails or Mexican tetras, the investigators put the fish in aquariums with illumination that mimicked natural underwater light conditions and filters that either blocked or permitted UV light.
http://www.sciencemag.org/
When the researchers took UV photographs of five swordtail species, they found that UV ornamentation is most prominent in males of species that inhabit regions with lots of Mexican tetras.