FishForums.com - View Single Post - How to tell the difference between a male and female guppy

Lexus · 01-27-2005, 06:03 PM

Sexing guppies is relatively easy. Generally speaking, the males have much longer, ornate and colorful finnage, whereas the females tend to have smaller fins and not as much color. Of course, a more sure fire method of sexing guppies is to examine their anal/ventral fin. As is true with most common livebearers, the ventral fin on the male is formed into a pointed device called the gonopodium, a stick-like modified anal fin, which is used for depositing sperm. The female's fin is larger and rounded in order to aid in sperm reception.

also see...
http://guppyplace.tripod.com/Anatomy.html

01-27-2005, 06:03 PM	#2
Lexus Senior Member Join Date: Jan 2005 Location: Wisconsin Age: 22 Posts: 2,405	Re: How to tell the difference between a male and female guppy Sexing guppies is relatively easy. Generally speaking, the males have much longer, ornate and colorful finnage, whereas the females tend to have smaller fins and not as much color. Of course, a more sure fire method of sexing guppies is to examine their anal/ventral fin. As is true with most common livebearers, the ventral fin on the male is formed into a pointed device called the gonopodium, a stick-like modified anal fin, which is used for depositing sperm. The female's fin is larger and rounded in order to aid in sperm reception. also see... http://guppyplace.tripod.com/Anatomy.html __________________ 55 Gallon 2 Blood Parrots 2 Angelfish 1 Fantail Goldfish 46 Gallon 1 Albino Bristlenose 2 Angelfish 4 African Dwarf Frogs 4 Black Skirt Tetras 5 Zebra Danios 8 Tiger Barbs 9 Neon Tetras 13 Assorted Corys 29 Gallon 8 Daffodil Cichlids & fry 1 Electric Blue Crayfish 10 Gallon 2 Snails