Colours on fish are often associated with their attractiveness to members of the opposite sex.
Female guppies are larger and plainer. The male is distinctive for his long, flowing, colourful tail and generally brilliant colours.
Male guppies have a pointier anal fin and a bigger tail than the female and the female is larger than the male.
mine has a yellow+black spotty tail but they can be practicly any color
sounds like you have a male guppy harrassing a female. Simply go and buy a few more female guppies and that way the male will have more than one female to harass.
Male is bright coloured with the large tail, female is drab and dull looking without a large tail.
It is not fighting. It is competition.
A male peacock is covered in colourful feathers, with especially long, showy tail feathers.
It depends on the kind of gourami you have. In some it's the male is more colourful (Colisa species) In others its the male has longer, flowing fins (Trichogaster species). If you have Kissing Gouramies there is no sexual dimorphism.
A pajocke is another term for a pajock - a peacock, a male peafowl, noted for its large and extravagantly coloured tail.
Male guppies come in many different colors, have frilly tails, and their color covers their whole body.
Guppies are livebearing fish, and so they've been bred in captivity so long and so easily that many different varieties have been produced including fantail, lyretail, veiltail and many other long/draping tail varieties. These occur in males and females. generally, the male's tail is larger, but if you compared, say, a male with a small-tail variety and a female of a veiltail variety, the female's tail would be bigger because she's been selectively bred to have the big tail. If you're trying to tell the sex of your guppies, there's an easier way. Guppies are livebreeders and use internal fertilisation, meaning that the male guppy has a penis-like organ known as a gonopodium that he uses to make the female pregnant. It's basically a modified anal fin and is located just behind the pectoral fins. A female with a tucked up anal fin can look like a male until you learn exactly where to look, it takes a while. the gonopodium points back towards the tail and is very thin. Males are often leaner in the body than females also.
A paiocke is an obsolete term for a peacock, a male peafowl, noted for its large and extravagantly coloured tail.