any aquatic bird of the genus Anhinga and family Anhingidae, of tropical and subtropical inland waters, having a long slender neck and bill: order Pelecaniformes (pelicans, cormorants, etc)
2.
any small brightly coloured North American freshwater fish of the genus Etheostoma and related genera: family Percidae (perches)
darter in American English
(dɑrtər)
noun
1.
a thing or animal that darts
2.
anhinga
3. US
any of various small, brightly colored freshwater perches of North America