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Water Hardness Guppy Fancy Guppy Poecilia reticulata: 5 cm (2.0 in) Many color and tail pattern varieties exist. They generally need a ratio of 1 male to 2 females or more. All guppies and mollies are hardy fish that tolerate lower oxygen levels and temperatures than most aquarium fish, give birth to live young, and readily breed in home tanks.
Guppies prefer water temperatures around 22.2–26.1 °C (72–79 °F) for reproduction. Pregnant female guppies have enlarged and darkened gravid spots near their anal vents. Just before birth, the eyes of fry may be seen through the translucent skin in this area of the female's body. [64]
Poecilia wingei is a very colorful guppy species, similar to the fancy guppy often found in pet shops. The species was first collected from Laguna de Patos in Venezuela by Franklyn F. Bond in 1937, and rediscovered by Dr. John Endler in 1975.
The rummy-nose tetra cannot be kept with other popular ornamental fishes, such as African cichlids, as they require very different water parameters. [12] The water chemistry preferred by these fishes, as might be inferred readily from that of the wild habitat, is soft, acidic water (hardness no higher than 6° dH and pH around 6.4–7.0 is ...
A large group of yellowfin tuna swimming off the coast of Italy. Like all fish, they sleep, but it's not like human sleep. Giordano Cipriani/The Image Bank via Getty Images Curious Kids is a ...
Lives in fresh water and estuaries, migrating to spawn in the Sargasso Sea. American fourspot flounder: Hippoglossina oblonga: American gizzard shad: Dorosoma cepedianum: American harvestfish: Peprilus paru: American paddlefish: Polyodon spathula [5] American pickerel: Esox americanus: Also known as Redfin pickerel, brook pickerel, and Grass ...
Today fishkeeping has become a popular hobby that almost anyone can do. Aquarium fish are both wild-caught and bred throughout the world. Captive-bred species are inexpensive and widely available, and are less likely to be infected with diseases or parasites. Unfortunately, successive generations of inbred fish frequently have less color and ...
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