10 Awesome Nano Fish For Nano Tanks

Nano fish grow to less than two inches and are fit for aquariums as small as 10 gallons. Here are 10 nano fish for nano aquariums:

Chili Rasbora

Chili Rasbora is a schooling nano fish that thrive in groups of 6 or more. They are bright red in color with a shimmering black stripe down the side that gets thinner toward the tail. They are very active so you’ll always see them moving about in the tank.

Chili Rasbora

Otocinclus Catfish

The Otocinclus catfish or Oto cat is a type of catfish that feeds on algae. It’s one of the best algae eating fish and can keep your tank free of different types of algae.

These types of nano fish prefer to be in groups of 5 or more. Oto cats grow to about 2 inches in length.

Otocinclus Catfish

Freshwater Pea Puffer

Freshwater pea puffers are nano fish that grow no more than an inch in size. They have a beautiful colored pattern that is a blend of black and yellowish-gold.

While beautiful to look at, pea puffers can be aggressive toward each other and other fish. Place lots of plants or hiding places to help deter aggression.

Groups of 3 or less are typical in a 10 gallon but they can be kept by themselves with no problem.

Freshwater Pea Puffer

Neon Tetra

Neon Tetras do best in groups of 6 or more. These micro fish grow to about 1.2 inches in length. They are long and thin with small fins. They are bright blue in color with bright red coloring nearer to the tail.

Neon Tetra

White Cloud Minnow

The White Cloud Minnow is a great addition to any aquarium. It has white to gold coloration with red coloration on its fins and tail. They show schooling behavior so keeping 6 to 10 or more is best. They grow to about 1.25 inches in length.

White Cloud Minnow

Guppies

Guppies are best kept in a group of either all males or one male and 3 or 4 females. There are many different types of guppies. However, the male Fancy Guppy comes in several different colors. They grow to about 2 inches in length. Beware though, they are prolific breeders so best to keep only males.

Fancy Guppy.

Cherry Barb

The cherry barb is a freshwater nano fish that grows to a maximum size of about 2 inches. They should be kept in groups of at least 5 or more. Males have a striking red color and females show some red color as well. Keep cherry barbs in tanks with lots of hiding places.

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Cherry Barbs

Endler’s Livebearers

Endler’s Livebearers are closely related to guppies and they are just as colorful and exhibit the same prolific breeding behaviors. It’s best to keep a group of only males or a group of 4 females and 1 male for breeding. They grow to about 1.8 inches in length.

Endler’s Livebearers

Celestial Pearl Danio

The celestial pearl danio or galaxy rasbora is a slender fish with small pointed fins. It has a dark blue body that’s covered with golden spots. There’s also some reddish-orange coloration that outlines the body. They grow up to 1 inch in length.

Celestial Pearl Danio

Cardinal Tetras

Cardinal Tetras thrive in groups of 5 or more. They grow to about 2 inches. Unlike Neon Tetras, the Cardinal Tetras’ blue and red coloring evenly covers its entire body from head to tail.

10 Awesome Nano Fish For Nano Tanks 1

Harlequin Rasboras

Harlequin rasbora are schooling nano fish that prefer to live in groups of 6 or more. They are orangish-red in color with a patch of black in the lower abdominal area near the anal fin. They grow to about 2 inches in length.

Harlequin Rasbora Fish

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