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Introduction: The Pupfish is very small and cute fish. its scientific name is Cyprinodon. It is silver and has six to nine dark bands spots on its sides. This tiny fish grows approximately to the full length of 2.5 inches. They develop quickly and they sometimes reach to its full maturity level within two to three months. However, their average life span is estimated to be six to nine months, but some survive more than one year.

Physical features: The body of the pupfish is chubby. The whole body structure is thick; it has short and scaled head with an upturned mouth. However, it is regarded as one of the calm and tiny fish. It has anal and dorsal fins, which are rounded with the dorsal and sometimes they are exhibiting a dark blotch. It has a smoothly rounded profile. The background color in females and juveniles is silvery. A mature male Pupfish is brightly colored and look good .Pupfish fins are usually colorless except a dark spot on their anal fin., while other fins are dark colored.

Habitat: Pupfish have an extraordinary power to survive in an extreme and harsh condition. They can survive in water, which has five times more salt than the ocean or sea; it can also survive in high or low water temperatures. Interesting fact about them is; they can survive in any abrupt changes in the water salinity or temperature.

Food: Pupfish generally feed on brown or green algae. During winter season, when the water is cold, they usually become dormant and start burrowing in the muddy bottom of their habitat. Larva pupfish usually feed on tiny invertebrates within a few hours after hatching. As they grow up they become omnivores, and start consuming food like algae, plants, small invertebrates, and detritus. Adult fish consume crustaceans, insects, pile worms, detritus or even algae.

Reproduction: When the spring is near and the water start getting warm, Pupfish become very active at that time and begin to search for their mating ritual. Spawning usually starts towards the end of the February and continues until summer. They become sexually active in six weeks of age if you provide them with good food and suitable temperatures. Some of them do not breed until second summer, but on rare occasions, they can breed in their first summer. Usually, the male fish are highly aggressive in nature during the mating season usually, they defend an area of about two to three square meters, but this can change. The male breeding behaviors are sometimes very different.The females usually forage inconspicuously. As both male and female fish move toward one another, the female tilts a little

Suitable environment: As temperatures become high in summer, due to evaporation, streams or pools dries up as a result death of most Pupfish. Very few Pupfish survive in the pools, streams and springs that do not dry up easily.
This fish require abundant water supply and good food to survive. Pupfish are easy to maintain, as they do not require much care and time. All they need is abundant of water supply and good food.