eastern gambusia (English-Australia), gambusia (English), mosquitofish (English-USA), plague minnow (English-Australia), topminnow (English-USA)
Commonly called the eastern mosquitofish, it looks identical to G. affinis apart from a large dark blotch on each side of the female fish. There is also a difference between the species in the number of dorsal and anal fin rays present. G. affinis has six dorsal and nine anal rays for a total of 15, while G. holbrooki has seven dorsal and 10 anal rays for a total of 17.
Commonly called the sailfin molly; in mosquitofish, the dorsal fin is high and rounded, whereas on sailfin molly the base of the dorsal fin is quite long (NIWA, 2003).
guppie (Afrikaans), guppii (Japanese), guppy (English), hung dzoek ue (Cantonese), ikan seribu (Malay), lareza tripikaloshe (Albanian), lebistes (Portuguese), lepistes (Turkish), Mexicano (Portuguese), miljoenvis (Afrikaans), miljoonakala (Finnish), million fish (English), millionenfisch (German), millions (English), poisson million (French), queue de voile (French), rainbow fish (English), sarapintado (Portuguese), Sardinita (Spanish), Wilder Riesenguppy (German), zivorodka duhová (Czech)
Commonly called guppy, mosquitofish can be distinguished from guppies by the position of the dorsal fin in relation to the anal fin. In mosquitofish, the dorsal fin begins behind the anal fin, whereas on guppies the dorsal fin is opposite the anal fin. (NIWA, 2003)