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In freshwater or estuarine systems close to land, nitrate can reach concentrations that are lethal to fish. While nitrate is much less toxic than ammonia, [20] levels over 30 ppm of nitrate can inhibit growth, impair the immune system and cause stress in some aquatic species. [21] Nitrate toxicity remains a subject of debate. [22]
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)
Freshwater aquarium. Lists of aquarium life include lists of fish, amphibians, invertebrates and plants in freshwater, brackish and marine aquariums. In fishkeeping, suitable species of aquarium fish, plants and other organisms vary with the size, water chemistry and temperature of the aquarium. Freshwater-specific lists:
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[1] Such fish are good starter fish can be used for 'cycling' an aquarium (i.e. reducing ammonia and nitrites to effectively zero.) [2] [more detail needed] Examples of hardy freshwater fish include Poecilids such as the guppy, [1] molly, swordtail and platy, most species of betta, zebra danios, and some tetras. Generally, fish are hardy only ...
The fish is interesting in that it can act as a "mine canary" in an aquarium, alerting the aquarist to potential pollution problems in an aquarium. When levels of certain metabolic wastes (ammonia, nitrites and nitrates) exceed critical levels, the intense ruby-red colour of the fish's facial area becomes pale.
32 best aquarium pets that aren't fish 1. Freshwater Snail. Freshwater Snail. ... with a pH level between 6.5 and 8.5 and a temperature between 65 and 85 degrees Fahrenheit. ...
The marbled hatchetfish is common in the aquarium industry. It represents one of the largest exports of freshwater ornamental fish from the Rio Negro Region with about 400,000 exported annually. Like most Amazonian fish, the species prefers softer, acidic water within the pH range of 5.0 to 8.0.