Editing Mosquitofish (section)

==Description==
Mosquitofish are small and of a dull grey coloring, with a large abdomen, and have rounded dorsal and caudal fins and an upturned mouth.<ref name="Smithsonian institution"/> [[Sexual dimorphism]] is seen; mature females reach a maximum overall length of {{convert|7|cm|in|abbr=on}}, while males reach only {{convert|4|cm|in|abbr=on}}. Sexual dimorphism is also seen in the physiological structures of the body. The [[anal fin]]s on adult females resemble the [[dorsal fin]]s, while the anal fins of adult males are pointed. This pointed fin, referred to as a [[gonopodium]], is used to deposit milt inside the female. The gonopodium of ''G. affinis'' has a smooth third ray (the anteriormost elongated ray), while that of ''G. holbrooki'' bears minute denticles.<ref>{{cite journal|last1=Quvatov|first1=Asqar Q.|last2=Atamuratova|first2=Mukhayyo Sh.|last3=Mirzaev|first3=Ulugbek T.|title=Morphometric Characteristics of ''Gambusia holbrooki'' and ''Gambusia affinis'' (Cyprinodontiformes: Poeciliidae) Distributed on the Plains of the Chirchik River, Uzbekistan|journal=Egyptian Journal of Aquatic Biology and Fisheries|volume=26|issue=1|pages=341–350|doi=10.21608/EJABF.2022.217574|doi-access=free|year=2022}}</ref>  Adult female mosquitofish can be identified by a gravid spot they possess on the posterior of their abdomens.  Other species considered similar to ''G. affinis'' include ''[[Poecilia latipinna]]'', ''[[Poecilia reticulata]]'', and ''[[Xiphophorus maculatus]]''; they are commonly misidentified as mosquitofish.<ref name="Smithsonian institution"/><ref name="issg">{{cite web|title=''Gambusia affinis'' (fish)|url=http://www.issg.org/database/species/ecology.asp?fr=1&si=126|publisher=Global Invasive Species Database|access-date=21 October 2011}}</ref>