Karaoke, For other uses see Guppy (disambiguation).
Guppy.
The guppy (Poecilia reticulata), also known as million fish and rainbow fish is one of the world "s most widely distributed. Tropical fish and one, of the most popular freshwater aquarium fish species. It is a member of the Poeciliidae, family and. Like almost all American members of, the family is live-bearing. Guppies whose natural, range is in Northeast, South America. Were introduced to many habitats and are now found all over the world. They are highly adaptable and thrive in many different. Environmental and ecological conditions, Male guppies which are smaller than females have ornamental, caudal and dorsal. Fins while females, are duller in colour. Wild guppies generally feed on a variety of food sources including benthic, algae. And aquatic insect larvae. Guppies are used as a model organism in the field, of ecology evolution and behavioural, studies.
Distribution and habitat.
Guppies are native to Antigua and Barbuda Barbados Brazil,,,,, Guyana Jamaica the Netherlands Antilles Trinidad and Tobago,,, The U.S. Virgin, Islands and Venezuela. However guppies have, been introduced to many different countries on every continent. Except Antarctica. Sometimes this has occurred accidentally but most, often as a means of mosquito control. The guppies. Were expected to eat the mosquito larvae and help slow the spread, of malaria but in many cases these guppies, have had. A negative impact on native fish populations. Field studies reveal that guppies have colonized almost every freshwater body. Accessible to them in their natural ranges especially in, the streams located near the coastal fringes of mainland South. America. Although not typically found there guppies also, have tolerance to brackish water and have colonized some brackish. Habitats.They tend to be more abundant in smaller streams and pools than in large deep or,, fast - flowing rivers.
Life cycle.
Two or three generations of guppies per year occur in the wild. Guppies are well developed and capable of independent existence. Without further parental care by the time they are born. Young guppies school together and perform antipredator, tactics. Brood size is extremely variable yet some, consistent differences exist among populations depending on the predation level. And other factors. Females of matching body sizes tend to produce more numerous but smaller-sized offspring in high predation. Conditions. Female guppies first produce offspring at 10 - 20 weeks, of age and they continue to reproduce until 20 - 34 months. Of age. Male guppies mature in 7 weeks or less.Total lifespan of guppies in the wild, varies greatly but it is typically. Around 2 years. Variations in such life historic characteristics of guppies are observed in, different populations indicating. That different evolutionary pressures exist.
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