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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, [26] levels over 30 ppm of nitrate can inhibit growth, impair the immune system and cause stress in some aquatic species. [27] Nitrate toxicity remains a subject of debate. [28]
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)
Requires brackish aquarium conditions with very low Nitrite and Nitrate levels to be kept successfully. Freshwater compromises immune system, harms puffer, and shortens life extremely. Commonly kept in freshwater. Green spotted puffer Tetraodon nigroviridis: 6" Often sold as freshwater fish, but this species actually thrives in brackish water.
Schematic representation of the flow of Nitrogen through a common aquarium. Ammonia poisoning is a common fish disease in new aquariums , especially when immediately stocked to full capacity. Ideally, the level of ammonia (NH 3 ) and ammonium compounds (i.e. those containing NH 4 + ) in fish tanks should be zero.
Tropical freshwater aquarium. Freshwater fish may be either coldwater or tropical species. Although freshwater aquariums can be set up as community tanks, coldwater and tropical fish are generally not mixed due to incompatibilities in temperature requirements. Coldwater aquariums house goldfish and other species that do not require a heating ...
Bear in mind that a saltwater aquarium is more expensive and difficult to set up and maintain than freshwater even if you chose one of the best fish tanks. Some of the fish, too, can fetch eye ...
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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