Molly and Similar Species
Poecilia
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Open the appSeveral fish can be confused with Molly. Here are the key differences.
Species often confused with {name}
Guppy
Poecilia reticulata
Key differences: Guppies are generally smaller, have more elaborate and often fan-shaped caudal fins in males, and lack the prominent dorsal fin development seen in male sailfin mollies. Guppies are almost exclusively freshwater, while mollies are more tolerant of brackish conditions.
Platy
Xiphophorus maculatus
Key differences: Platies have a more robust, stockier body shape and typically a more rounded caudal fin. While also livebearers, their finnage is generally less exaggerated than many molly varieties. Platies are primarily freshwater.
Swordtail
Xiphophorus hellerii
Key differences: Male swordtails are easily distinguished by the elongated lower ray of their caudal fin, forming a 'sword'. Their body shape is also more elongated than most mollies.
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