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27 of the coolest freshwater aquarium fish. Most of these exceptionally colorful freshwater fish can contribute to an impressive display aquarium. Other species listed below stand out with their unique and exotic shapes and faces. Here are the coolest freshwater fish that will make the prettiest aquarium: 1. Malawi Mbunas
This fish species from a genus known as Signigobius is white all over with splashes of orange markings. Such-colored fish typically have an overall remarkable appearance in the aquarium. Anyhow, the Twin Spot Goby is a sand sifting goby species and will always be seen scooping and processing fine substrate particles through its gills. Following ...
Most fish with this size typically require at least 55 gallons of water to thrive which is quite substantial. However there are a few fish species of this size that can also fare well in a smaller 40 gallon tank. Having said that, it’s time to take a look at some of the best large freshwater fish for an aquarium: Gold Severum
These spawning fish from the genus Mikrogeophagus, are native to the Amazon and Orinoco river basins in South America. Anyways, my experience has been that this fish is an excellent fit as a centerpiece species for a non-aggressive community in planted fish tanks. Related: Cool and Pretty Freshwater Aquarium Fish from Around the Hobby. 20.
This isn’t the biggest fish on the list at 10-12 in (25.4 – 30.5 cm), but it is fairly large compared to some of the other ones listed. Keeping on trend with the size of this fish, they will need a larger tank of at least 100 or more gallons to properly house them with enough space to freely swim around.
Known for their gregariousness, these tropical fish like hanging out with other community fish and should be kept in groups of at least eight. Author’s note: Despite their easy-going nature, Banggai Cardinalfish are actually micropredators. Any small shrimp or fish species might get eaten by them if kept in the same aquarium. 4.
This small fish from Indonesia is another great option for anyone looking to stock their tank with unique and exotic fish. When fully grown, Yellow-Striped Cardinalfish reach a max size of 2.5 inches (6.4 cm), which isn’t very big.
This sizable fish will eat algae by scraping it off your rocks almost constantly. When that’s gone, the Quoyi Parrotfish will need to eat algae sheets or wafers to remain healthy. Needless to say, this type of fish is not ideal for dedicated planted marine aquariums. Anyway, bear in mind that these fish can be difficult to keep long-term.
This type of fish isn’t the most requested or popular amongst rare Bettas, but it is still hard to come across if you’re looking to buy one. Author’s note: A cool fact about these fish is that they have been known to completely change colors or make their current colors more vibrant. This happens randomly and more than one time during ...
Rosy Loaches fish are commonly known as stone loaches or hillstream loaches. These fish are identified by their rosy-pink coloration, slender body, and distinctive markings along their sides. They derive from the habitats of Southeast Asia, particularly in the Arakan Hills region of western Myanmar (Burma). The life expectancy is around 6 to 8 ...