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ronnfive · 09-20-2005, 12:04 AM

How to identify male from female:

Swordtail (Xiphophorus helleri) – this type of livebearers are easily sexed through observation. The male Swordtails have swords on their tails while the females do not. Usually the female is larger and has a rounded body than the male. Generally, the best observations are focused on their “gonopodium” or what we called the modified anal fin. It is a tube-like fin at the lower backside next to the belly of the fish.

Guppy and Endler (Poecilia reticulata/Poecilia sp. endler's) – this type of livebearers are easily sexed through observation. The male Guppies or Endlers are smaller and more colorful than the females. Generally, the best observations are focused on their “gonopodium” or what we called the modified anal fin. It is a tube-like fin at the lower backside next to the belly of the fish.

Molly (poecilia latipinna) – this type of livebearers need more observation than the other livebearers. The common male Mollies have a colorful tail (like bluish or greenish color) having a larger dorsal fin, and is usually thinner (viewed from top) than the females. Generally, the best observations are focused on their “gonopodium” or what we called the modified anal fin. It is a tube-like fin at the lower backside next to the belly of the fish.

Platy (xiphophorus maculatus) – this type of livebearers needs careful observation than the other livebearers. The male Platies are typically smaller or thinner than the females. Generally, the best observations are focused on their “gonopodium” or what we called the modified anal fin. It is a tube-like fin at the lower backside next to the belly of the fish.

Here is the male’s gonopodium

A closer look…
Gonopodium

Here’s a female
Anal fin

A closer look...
Anal Fin

Hope you find this useful...
Ronn

Please feel free to correct me, if I’m wrong or add something... so that this will be very useful to the others or new into fish keeping of this type of fish. Thank you.

09-20-2005, 12:04 AM	#1
ronnfive Member Join Date: Sep 2005 Age: 28 Posts: 44 User Feedback: (0)	How to identify male from female... How to identify male from female: Swordtail (Xiphophorus helleri) – this type of livebearers are easily sexed through observation. The male Swordtails have swords on their tails while the females do not. Usually the female is larger and has a rounded body than the male. Generally, the best observations are focused on their “gonopodium” or what we called the modified anal fin. It is a tube-like fin at the lower backside next to the belly of the fish. Guppy and Endler (Poecilia reticulata/Poecilia sp. endler's) – this type of livebearers are easily sexed through observation. The male Guppies or Endlers are smaller and more colorful than the females. Generally, the best observations are focused on their “gonopodium” or what we called the modified anal fin. It is a tube-like fin at the lower backside next to the belly of the fish. Molly (poecilia latipinna) – this type of livebearers need more observation than the other livebearers. The common male Mollies have a colorful tail (like bluish or greenish color) having a larger dorsal fin, and is usually thinner (viewed from top) than the females. Generally, the best observations are focused on their “gonopodium” or what we called the modified anal fin. It is a tube-like fin at the lower backside next to the belly of the fish. Platy (xiphophorus maculatus) – this type of livebearers needs careful observation than the other livebearers. The male Platies are typically smaller or thinner than the females. Generally, the best observations are focused on their “gonopodium” or what we called the modified anal fin. It is a tube-like fin at the lower backside next to the belly of the fish. Here is the male’s gonopodium A closer look… Gonopodium Here’s a female Anal fin A closer look... Anal Fin Hope you find this useful... Ronn Please feel free to correct me, if I’m wrong or add something... so that this will be very useful to the others or new into fish keeping of this type of fish. Thank you. Last edited by ronnfive; 04-14-2008 at 01:15 AM. Reason: adding.more.info.