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  2. Brackish-water aquarium - Wikipedia

    en.wikipedia.org/wiki/Brackish-water_aquarium

    The tank sizes can vary widely depending on the needs of the particular species, and the temperature is usually in the tropical range of 76-82 °F. The substrate can vary from sand to gravel, but many aquarists choose crushed coral or aragonite sand, both of which help raise the hardness and pH to an acceptable level.

  3. Wikipedia:WikiProject Aquarium Fishes - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:WikiProject...

    e2eamon (talk · contribs) New to Wikipedia, but thought that since I like fish and am currently expanding my fish-tank system, this would help me learn about fish and Wikipedia at the same time. Dazer012 ( talk · contribs ) 3 years of exsperiance with 2 current freshwater tanks on the go containing tetras, harliquins, corydoras, catfish ...

  4. Oscar (fish) - Wikipedia

    en.wikipedia.org/wiki/Oscar_(fish)

    The oscar (Astronotus ocellatus) is a species of fish from the cichlid family known under a variety of common names, including tiger oscar, velvet cichlid, and marble cichlid. [2] In tropical South America, where the species naturally resides, A. ocellatus specimens are often found for sale as a food fish in the local markets.

  5. Ammonia poisoning - Wikipedia

    en.wikipedia.org/wiki/Ammonia_poisoning

    Ideally, the level of ammonia (NH 3) and ammonium compounds (i.e. those containing NH 4 +) in fish tanks should be zero. Although trace amounts are generally harmless, they can still lead to problems over time. [1] Understanding the nitrogen cycle is essential for the keeping of any aquatic life. The source of ammonia in fish tanks is fish's ...

  6. pH - Wikipedia

    en.wikipedia.org/wiki/PH

    The pH range is commonly given as zero to 14, but a pH value can be less than 0 for very concentrated strong acids or greater than 14 for very concentrated strong bases. [2] The pH scale is traceable to a set of standard solutions whose pH is established by international agreement. [3]

  7. List of freshwater aquarium fish species - Wikipedia

    en.wikipedia.org/wiki/List_of_freshwater...

    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. [58] can live in full sea water [59] 66 °F - 84 °F (19 °C - 29 °C)

  8. Freshwater aquarium - Wikipedia

    en.wikipedia.org/wiki/Freshwater_aquarium

    For a tropical fish tank, maintaining a warm environmental temperature ranging between 75 and 86 °F (24 to 30 °C) enables different tropical fish to thrive at different temperatures. [2] Aquarium substrate usually consists of sand or gravel. Aquarium substrate is important for the fish's health and replicating their natural environment.

  9. Talk:Oscar (fish) - Wikipedia

    en.wikipedia.org/wiki/Talk:Oscar_(fish)

    I learned the hard way, always make sure, and double sure that the lid is on the Oscar tank. They will jump out. ° ≈ ≠ ≤ ≥ ± − × ÷ ← → · §Sandi207.69.139.160 04:00, 25 February 2007 (UTC) I have raised several Oscars over the years, and with lots of success. Recently I had a small "red" jump out of its tank and die.

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