| 1. | In some species, the gonopodium may be half the total body length.
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| 2. | When ready for mating, the gonopodium becomes erect and points forward towards the female.
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| 3. | "O . dovii " has no gonopodium like the other members of its family.
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| 4. | The male uses his modified anal fin, or gonopodium, to deliver sperm to the female.
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| 5. | Fertilization is internal; the male secretes milt into the genital aperture of the female through his gonopodium.
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| 6. | If a female remains stationary and her partner contacts her vent with his gonopodium, she is fertilized.
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| 7. | In guppies, the male s gonopodium can cause damage when forcefully inserted, causing cloacal damage to the females.
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| 8. | The anal fin of the male fish has evolved into a gonopodium, a stick-shaped organ used for reproduction.
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| 9. | Like most poeciliids, males'anal fins are modified into a gonopodium that is used for impregnating females during mating.
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| 10. | The gonopodium of " Neoheterandria elegans " males has a long, bony rod that projects forward and downward.
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