How Big Do Zebra Danios Get

Zebra danios don’t get very big as they range between 1.5 inches and 2 inches. The fact that they are so small means that you can put quite a few of them in one tank, and they will also be happier in a school. Some species of danios do grow to be more extensive, though.

Zebra danios are perfect for aquariums and as first-time pets. While they might not have a long lifespan, they tolerate their environments. They are also easy to maintain, so you don’t have to worry about them costing you too much money on equipment.

How Big Is A Zebra Danio?

Zebra danios aren’t massive fish, making them the perfect addition to community aquariums. Zebra danios can grow to about 1.5 – 2 inches long and barely rise above that length.

They can grow to 2 inches when they reach adulthood, which takes around 6 weeks, making them much smaller than other species like the giant danio.

Zebra Danio in White Background

Other Danio Species Sizes

There aren’t just one danio fish species. The different species range in color and size, and all of them make great additions to aquariums.

You have to ensure that your tank is big enough to cater to the bigger danio fish and that they have enough swimming space.

There are 27 danios fish species known to man today. However, only about 7 of them are the most popular ones you can acquire in your tank.

Some might also not adapt to the tank life or may be aggressive towards other species of danios you might have in the aquarium.

  • Dwarf spotted danio – They are some of the smallest danio species and only grow to about 2 inches when reaching adulthood. You can put them in a small tank of 10 gallons. They have a spotted appearance and it’s best to keep these fish around similar size species that aren’t aggressive
  • Pearl danio – The pearl danio is primarily white and reaches 2 inches when adult. However, they have a longer lifespan than some other species reaching five years. They are also some of the most popular danios to have. In addition, they have a tolerance to many water conditions, and they are incredibly active
  • Giant danio – The giant danios are the biggest of the danio species. They reach four inches in length and have a lifespan of 5 years. In addition, they need a bigger tank which means a minimum of 30 gallons and must be kept with large species
  • White cloud mountain minnow – The white clouds are very active, roughly 2 inches, with a 5+ year lifespan. They fair well in unheated tanks, and they are easy to breed. In addition, the males might be a little aggressive, so you should keep an eye on them for nipping other fish
  • Rosy danio – Rosy danios also grow to about 2 inches in length and have a purple or rosy color to their body. They only recently became available to buy from stores and are becoming quite popular. In addition, they also like their water a little warmer than other danio species
  • Glowlight danio – The glowlight danio can be kept with any species of danio. They are about 1.5 inches long and have a five-year lifespan. In addition, their coloring is striking and bright compared to others
  • Zebra danio – The zebra danio is the most popular and most recognized of the danio family. They are about 1.5 to 2 inches long and have stripes on their silver and blue body, hence the name. In addition, the zebra danios are easy to breed and maintain

Tank Recommendations For Zebra Danios

Placing your fish in a long tank with plenty of room to swim is best. You can also put some plants on top of the water or the bottom of the tank, as it will make them feel more at home.

In addition, a strong current from the filter can also help replicate the river habitat from which they hail.

Zebra danios do best in groups of six or more, which means they are in a school.

It would be best to keep the lid on the tank as they are known to jump, which can lead to them jumping out of the tank. A well-decorated aquarium will make them feel more at ease, allowing them to exhibit their true colors.

While every danio species has a different water temperature, the zebra danio prefers water between 70° and 78° F.

The water temperature is essential because your fish may die when it’s not correct. When you get other fish, be sure they survive at the same temperature as the zebra danios.

Lifespan Of Zebra Danios

Zebra danios have an average lifespan of 2 years in captivity. They don’t have a very long lifespan overall, but some of the other danio species can live for up to 5 years.

However, there are some cases when they receive the proper care and live a healthy life where they can live up to 3 years.

Zebra Danio

The Appearance Of Zebra Danios

Zebra danios are known for looking like their namesake, the zebra. They have dark blue and silver scales with stripes along their bodies.

The zebra danios are small, roughly 1.5 inches, and they hail from Asia, where they are known as freshwater aquarium fish.

Zebra Danio Behavior And Compatibility Towards Other Species

Danios are friendly fish and passive towards other fish you will have in the aquarium. However, some species might be a little shy, like the rosy danio, or the males of some species might be aggressive toward other fish.

Knowing which fish you can place with the danios is better before you set up your tank. If your tank allows, you can put plenty of small passive fish with the zebra danios.

Zebra danios are also calm and passive fish, so you won’t have any problems placing them with other species of danios or other fish.


Zebra danios are between 1.5 and 2 inches long. Many other species of danios also vary in size. Some are bigger than zebra danios, while others are smaller. You can put danios with other fish in one aquarium as they aren’t aggressive and have very energetic personalities.