11 Sparkling Beauties to Make Your Freshwater Nano Tanks Cuter

Several fish-keepers failed to upgrade their nano-tanks into a larger one due to the shortage of space. However, these nano-tanks enable many aquarists to pursue their hobby of Fish-keeping with the minimum investment. So you don’t need to get disheartened because of the size of your tank. Here we have listed 11 most beautiful fish exclusively for nano-aquarium. Take a look:

1. Endler’s Livebearers

It is one of the most popular fish for nano-aquarium because of its appearance. The psychedelic patterns of blue, green, and orange on its body with transparent to semi-transparent fins and tail makes it the eye-candy for all.

It is a peaceful and “easy to keep” fish, so with minimal experience of fish-keeping, you can to grow them healthily. This omnivorous fish needs a 5-10-gallon tank as it grows only 1” (2.54 cm).

You may skip the females as adult ones breed daily, so. Unlike other fish, it gives birth to offspring – it does not lay eggs.

2. Betta Fish

If you are obsessed with colorful fish with long flowing tails, you must opt for Bettas. These are probably the most aggressive and hardy yet tiny species for nano-aquarium that can bear a slight mismatch in the tank.

You will get different colors and structures of these species to select for your nano tanks. Bettas generally grow 2.25” (5.7 cm), and a 5-10-gallon tank will be alright for them.

This carnivorous fish is easy to keep, and it is good for beginners, and they are not compatible with others, so it will be better to keep them alone.

3. Scarlet Badis

As the name indicates, this small fish is called to water jewels because of its sparkling red stripes in silver body. They are only 0.78” (2 cm), so a nano-aquarium of 5-gallon will be alright for this omnivorous fish.

If you think that this tiny species is peaceful, you are wrong. The males are very aggressive toward each other. It is a bit difficult to keep, and you may need the experience of 1-2 years to keep this.

4. Harlequin Rasbora

This magnificent small fish will enhance the beauty of your aquarium with its silvery body with a gradient of orange and a black patch towards the tail.

This omnivorous fish grows 2” (5 cm), and it is a peaceful fish. However, you will need to keep it in a shoal of 6, so you will need a 10-20-gallon tank. This stunning fish is easy to keep as they can survive in low oxygen, but if kept alone, it will be shy.

5. Fancy Guppy

The beginners who want peaceful and hardy fish for their nano-tank Fancy guppies are for them. They will offer you a wide range of colors in their body and a long, colorful tail. Actually, the tails are the reason for their attraction among the aquarists.  In its body, you can find silver to golden colorations with patches of orange, yellow, green, blue, black, and white.

Keeping this fish in a group of all males or one male with three females will be alright, and you will need a 20-gallon tank as they are 2” (5 cm) in length.

It is a peaceful fish lives on an omnivorous diet. You can feed them store-bought foods and live foods.

6. Sparkling Gourami

You will be able to see different colors ranging from green, grey, brown in its body, but blue is the most dominant shade in them. The small spots of brown in their fins and tail make them more beautiful. This peaceful Gourami prefers staying in a shoal.  It is 1.5” (3.8 cm), so a 10-gallon nano-tank will be alright for 4-5 sparkling Gourami.

You have to feed them omnivorous food to help them to intensify their colors. It is not very hardy and gets stressed easily in captivity. So it will be a better preference for experienced fish-keepers.

7. Least Killifish

It is another omnivorous fish with metallic colors in its body with a transparent tail. It grows 1.2” (3 cm) only, and you can place them in a 3-5-gallon tank. It is a hardy fish and can cope up with different temperatures in aquarium water.

Its body has a golden color, which seems to be yellow or silver in some parts. You can keep it with other small fish because keeping it in a group of one or more females will result in the birth of fries.

Bloodworms and algae are necessary to keep them healthy.  

8. Celestial Pearl Danio

It is called the shimmering freshwater beauty because of the orange and bluish-red body. Their fins and tail are orange to white and then transparent towards the edges. Because of its least requirements, it will be a good choice for beginners.

This omnivorous fish grows 1” (2.54 cm), so, it will fit for your 5-gallon tank, and it prefers to stay in shoal 4-6, so you can opt for a 10-gallon tank.

9. Gulf Coast Pygmy Sunfish

This micro fish will surely make your aquarium more elegant with its stunning electric-blue body and round-shaped fins and tail. It was discovered in 2009, and it has already received a warm welcome from aquarists because of its easy maintenance.

It grows only 1” (2.54 cm), and a 5-gallon tank will be good for them. These are pretty aggressive, and males are extremely territorial.

Insects and micro-worms are their favorite food, but you need to feed algae wafers too, as it is omnivorous. You can keep them in a shoal of 4 in a 10-gallon tank. They can survive even in low oxygen.

10. Endler’s Guppy

It is an extremely hardy fish with unique metallic coloration. It is a popular algae eater that lives on the omnivorous diet. Also, they are avid jumpers, and live food is mandatory to keep them energetic.

You will need a 5-gallon tank as it is only 1.8” (4.57 cm). It is a peaceful fish with black, blue, and orange shades in its body that make this one the centerpiece of any aquarium.

11. Neon Tetra

This list would have been incomplete without this gleaming fish. Its body is shiny, bluish-green, and bright red towards the tail. Fins and tails are orange and transparent towards the edges.

It is an ideal choice for beginners as it can cope up with different aquarium conditions. This peaceful Tetra loves omnivorous food. It grows 1.5” (4 cm), so a 10-gallon tank will be alright for them, and it will look more beautiful in LED lights.

This list shows that having a nano-tank is not a disadvantage as you can keep such tiny, beautiful, and cute fish. So, prepare yourself and make the selection wisely to impress your friends.