Two males in the same aquarium are a “hard no” in any setup, as they will fight to the death. In their natural habitat, they will munch on insects and their larvae.Īlthough female betta fish can live in groups of 5 in some circumstances, a fishbowl should only house one betta. They typically feed at the water’s surface and will accept meaty freeze-dried or live food. They are solitary fish that can entertain themselves with the right aqua-scaping setup in a fishbowl.īettas are carnivores, so they need a protein-filled diet to thrive. Male betta fish are notoriously aggressive towards each other, so you should avoid giving them a reason to follow their territorial instinctive behavior. They need plenty of space to move, and a large water surface area, as they “breathe” by using their labyrinth organ to gulp air at the water’s surface. Naturally drawn to shallow low-oxygen water streams and rice paddies, these fish will put on the show of a lifetime in any aquarium. See just how wide-ranging a betta fish tail’s shape can be.īettas originate from the beautiful country of Thailand. May be aggressive with other fish with large finsīetta fish are famous for their extravagant tails, with intensely pigmented colors that become even brighter and more saturated during mating season. These quick care guides will help you plan your bowl’s setup and give you a heads up on anything else you should know about the 8 most popular fish that don’t need a filter.
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We’ll touch on the more specific questions about how fish can live without a filter, and how to add oxygen to a fishbowl a bit later.įirst, you should get to know the potential inhabitants of your filterless aquarium. These 8 popular fish species are recommended by aquarists that have gone filter-less with their aquariums and have managed to keep healthy & active fish with just a few adjustments to their tank setup. Top 8 Most Popular Fish That Don’t Need A Filterįish that don’t need a filter are not automatically low-maintenance fish, but there are some true beauties that are easy to care for, even in a no-filter fishbowl. Conclusion – Fish That Don’t Need A Filter.Start off with a well-established substrate base.Add oxygen to your aquarium by setting-up a heavily planted tank.How To Care For Fish That Don’t Need A Filter.Ember Tetra Fish (Hyphessobrycon amandae) Sparkling Gourami Fish (Trichopsis pumila) Dwarf Pufferfish (Carinotetraodon travancoricus) White Cloud Mountain Minnow (Tanichthys albonubes) Top 8 Most Popular Fish That Don’t Need A Filter.Avoid overcrowding as a small tank without a filtration system can feel smaller if overcrowded.īut to remove any guesswork, this post will go over the details of some of the best fish that don’t require a filter.Hardy fish that do well even when water parameters fluctuate frequently.Coldwater fish so they can withstand the often shifts in temperature after water changes.Solitary fish that typically don’t do well in community tanks.
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