Best Fish For Nano, Micro And Small Aquariums - YouTube

are small, active, boisterous fish that are well suited for the community aquarium.
Photo provided by Flickr
Bettas are often marketed as suitable for tiny unfiltered bowls and vases, which they’re unfortunately not. However, that does not mean they’re not a great choice for small setups. Heated, filtered aquariums of at least 5 gallons (20L) make a great single-fish setup for Betta splendens. They naturally occur in waters with dense vegetation, so consider live plants to imitate the natural habitat and provide your betta with a place to hide.
Learn how to choose the best fish for your small tank and better understand the needs of your aquarium's inhabitants.
Photo provided by Flickr
#4: Kuhli Loaches
A number of different species of Pangio are sold as kuhli loaches, though the most commonly seen is probably Pangio kuhlii, a worm-like fish that is 3 to 4 inches long, with a pinkish-orange body ringed with thick chocolate-brown bands. Their natural habitat is the leaf litter at the bottom of streams, where their coloring helps them to hide from predators. If such discretion doesn’t work, these loaches are armed with sharp, erectile spines in front of their eyes that make them an unpleasant mouthful.
Because kuhli loaches are small and hardly swim around at all, they can be excellent fish for the small aquarium. They usually slither around the bottom of the tank looking for morsels of food. Unlike most other loaches, kuhli loaches are completely peaceful and need the company of their own kind. Keep them in groups of four or more for best results. Kuhli loaches make excellent community fish, and will happily feed at night on things like catfish pellets and bloodworms.
Mature females are remarkably robust and quite a bit longer than the males, but for whatever reason, this species very rarely breeds in aquaria. They are otherwise easy to keep, except for a tendency to find their way out of uncovered tanks. oh wow... what was horrible. Really, really horrible. Most of those aquariums are far too small for the fish. Eugh. Pretty - and cruel.
Photo provided by FlickrLet’s say you’re not prepared to exert much effort for your aquarium at all. You just want to keep a small fish or two (or maybe shrimp).
Photo provided by Flickr4) Nina Shen Rastogi, “For an Eco-Friendly Home Aquarium, Keep It Small and Track Your Fish,” The Washington Post 25 Jun. 2009.
Photo provided by Flickr

Gives information on how to increase your chances of success in keeping tropical fish when you have a small bowl or aquarium. This article was mainly written for freshwater fish hobbyists.The saltwater fish you're looking to keep in your small saltwater aquarium need to have a few characteristics to make the list below. You also need to keep in mind how they will get along with other species along with conspecifics. For better long term success, look for fish that:Finding small saltwater fish tank species for a small marine aquarium (nano tanks) is not difficult and they are often easily found in local saltwater reef stores and online. If you have a small saltwater aquarium it is vital to keep it lightly stocked and your water parameters stable. Make sure you research any fish you decide to get before you go to the store. Do not make that impulse buy or you may regret it later.“The bigger the aquarium, the easier maintaining it will be.” This is probably the single most important rule in the hobby, and for someone setting up their first aquarium, it is an absolutely essential fact of life. The size of the aquarium has a direct impact on several key physical and chemical processes, including pH stability, thermal stability, and the dilution of metabolic wastes such as ammonia. The smaller the tank, the less stable and the more toxic the environment is likely to be.

The size of the aquarium is also important in terms of how fish behave. Schooling fish need to be kept in groups of at least five or six specimens, and that it turn requires a certain amount of aquarium volume and swimming space. When kept in insufficient numbers, barbs, danios and tetras become frustrated and often turn aggressive or nippy. Territorial fish need to be able to claim a certain patch of ground, and if there isn’t enough space in the tank, fighting or bullying can occur. Livebearers pose a particular set of problems because of the way males fight with each other while also tending to bully the females. It is important that there is enough space for the male and female livebearers to spread out, and if necessary find hiding places where they can rest or give birth safely.
For all practical purposes, the minimum “safe” aquarium size is 20 US gallons (75 litres). Such a tank will be big enough to accommodate a reasonable selection of small aquarium fish without being particularly large or expensive. More ambitious aquarists interested in big or territorial species such as cichlids should consider larger systems though, with tanks up to 55 US gallons (210 litres) in size providing a good balance between size and expense.