Therefore, if it’s incorrect for the species, their cells could either dry up or burst from over-filling. Water hardness affects the salt concentration and calcium levels in the fish’s blood. This is determined by different chemicals in the water and influences the water pH levels. Water hardness is another thing to consider when getting fish for your tank. Move these and the filter positioning around since the aggressive breeds are territorial, and ‘environment’ changes make them less so. It’s wise to steer clear of the more aggressive fish or ensure your non-aggressive fish are fast swimmers.Īnd keep a good amount of foliage and tank decorations, such as rocks and driftwood. While some fish in this list are not specifically nano fish, they can be kept with smaller fish, as long as you consider your tank size. Many rainbowfish species are threatened or endangered and need to be purchased from a reliable vendor that sells commercially farmed fish.Nano fish are fish for small tanks of around 10 gallons, and they grow to less than 2 ½ inches. Rainbowfish are generally peaceful, community fish, so they can easily be mixed with other tropical community fish, again, provided their water quality requirements are compatible.Īlways thoroughly vet any potential vendor to ensure you are buying captive bred fish and are not taking any endangered fish from the wild. Ensure that your aquarium will have enough space for all your fish. Most rainbowfishes like to be in a small school, so plan on having at least five to six individuals for the larger species and eight to 10 individuals for the smaller species. It is best to pick a mix of species that have compatible water requirements rather than mixing by appearance. Trying to hit a "sweet spot" to accommodate a variety of water quality requirements may not end well. Whenever you are looking to add fish to your aquarium, ensure that your water quality parameters are correct before you mix different species. If properly cared for, rainbowfish can live for 5 years in aquariums. Provide plenty of aquatic plants to give them hiding places. In a home aquarium, rainbowfish need well-oxygenated water with a pH level of 6.8 - 7.2, optimal temperatures varying between 72-82 degrees F (22-28 degrees C). Here are some of the most colorful ones available from fish retailers. There are various sizes and body shapes in rainbowfish. Most rainbowfish species prefer schooling together in a small group. They prefer to live in planted areas and reproduce by laying eggs. They live in freshwater, including rivers, lakes, and swamps. Rainbowfish are classified by their elongated premaxillary teeth. When possible, always purchase fish from fish stores that buy from reputable breeders to ensure you are not buying fish taken from their native environments. There are many species on this list that are endangered or threatened in the wild. Keep in mind, fish from different parts of the world will often have different water quality requirements, so not all species need the same water parameters. Almost all rainbowfish species are community fish that get along with other non-aggressive freshwater fish species in an aquarium. Rainbowfish are a common freshwater community fish, but are you aware how many species are out there? All members of the Melanotaeniidae family, the rainbowfish, are a wonderfully diverse group of fishes that are native to the islands of Australia, New Guinea, Indonesia, Sulawesi and Madagascar.
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