Japan Blue Endler Guppy Care : A Complete Guide (With Pictures)

Japan Blue Endler Guppy is one of the newest color strains of aquarium fish.

This fish species is a valuable addition to the fish community because of their vibrant colors and easy going personality.

Japan Blue Endler Guppy

Even though it is a new and rare species, Japan Blue Endler Guppy is fast becoming popular among many aquarists.

Are You Looking To Keep Guppies? If yes check out our care guide here

Quick Facts

Temperament : Peaceful
Freshwater / Saltwater Fish : Freshwater/Saltwater
Care Level : Easy
Colour : Sky blue color and other postal colors
Diet : Fish Flakes, Blood Worm, Java Moss
Adult Size : 1-1.5 inches
Lifespan : 2-3 years
Water Temperature : 75-860F
Water Ph : 7.0-8.5
Tank Size : Min 5 Gallon


Japan Blue Endler Guppies are very hardy and adaptable. Also, they will cope in a wide variety of environments and will spend most time at the top of the tank. Nevertheless, they can swim and feed at the bottom of the tan as well.

They have bright and beautiful colors that make your tank more attractive. They have a lot of features that makes it similar to the bigger endler guppy.

Typical Behaviour

Japan Blue Endler Guppies are very peaceful. They will neither cause problems for themselves, other members of the tank, or the live plants you add to their tank.

They spend most times at the top of the tank swimming gracefully around the tank. But this does not stop them from feeding at the middle or the base of the tank.


Japan Blue Endler Guppies are beautifully colored. They have beautiful sky blue coloration and a highlight of other pastel colors.

It has a very small size and will not have trouble staying in a small tank. They have a slim body similar to the bigger Endler guppy.

Life Span

Japan Blue Endler Guppy does not live as long as most other members of the tank. However, you can still enjoy their presence in the tank for up to 2-3 years.

You can enhance their lifespan by ensuring proper diet, proper tank conditions, and suitable tank conditions.


Japan Blue Endler Guppies are one of the smallest fish in the aquarium. In addition, they can grow up to 1-1.5 inches under the right conditions. If you want them to grow to maximum possible size, it is essential to keep their stress level at the barest minimum.

You should also optimize other factors such as water parameters, diet, feeding rate, and tank mates to favor their growth.


How can you tell if a Japan Blue Endler Guppy is male or female? Japan Blue Endler Guppies are dimorphic, which means you can easily tell the difference between males and females from their physical appearance.

Females are less colorful than the males while the females are slightly larger than the males.

Compatible Tank Mates

Compatible tank mates for Japan Blue Endler Guppies fish include

  • Other types of guppies
  • Danios
  • Angelfish

Water Conditions

Japan Blue Endler Guppies are generally hardy, and they are flexible with their environmental and water demands. They can cope with a variety of tank conditions as long as it is not too harsh for them.

However, it is essential to ensure stability of the water conditions and avoid a drastic change.


Japan Blue Endler Guppies prefer warm water in their tank. They thrive best in a water temperature within the ranges of 75-860F.

It is recommended to use an aquarium heater to keep the water temperature at the recommended setting. If you are after a heater check out the ones available on amazon

PH Level

Japan Blue Endler Guppies love to live in water with a near neutral pH. They thrive best in the pH range of 6.5-7.5.

You can monitor your aquariums water using a PH water tester kit available on amazon

Oxygen level

As with most fish it is important for these fish to live in well oxygenated water, For this I recommend to install an air pump in to your aquarium as this will insure that the water is well oxygenated. You can pickup an air pump online from amazon.

Tank Setup

There are certain things we need to consider when we are selecting a tank, we know the needs of this fish are

  • Prefers a lot of space as they are active and love to swim around
  • They love live plants and decorations as it provides hiding spots for them
  • Prefers smooth sands to make them comfortable
  • Moderate lighting is enough to ensure their survival
  • Rocks and driftwoods will help them simulate their natural habitat

With this information we can now select a tank.

endlers tank setup

Tank Size

Japan Blue Endler Guppies are relatively small; therefore, you don’t need a gigantic tank before you can accommodate them. The major factor that can determine the size of your tank is the amount of fish you intend to keep together.

The minimum tank size for Japan Blue Endler Guppies is 5 gallon. This tank size is large enough to accommodate 2-3 fish. The most suitable ratio is to assign 2 gallons of water for each fish.

How many Japan Blue Endler Guppies to keep in a 5 gallon tank? You can keep about 2-3 Japan Blue Endler Guppies in a 5 gallon tank. The best ratio is to allocate 2 gallons for each fish.

If you are looking to purchase a fish aquarium I recommend you check out the aquariums on amazon


The cleaner your tank water is the more chance your fish have of thriving and living a happier and healthier life. I have always used a fluval aquarium filter which I highly recommend, Check them out here


It is recommended to use an aquarium heater to keep the water temperature at the recommended setting. If you are after a heater check out the ones available on amazon

I also recommend that you monitor your aquariums water temperature by using an aquarium digital thermometer. Check out these ones from amazon

Tank Decorations

Japan Blue Endler Guppies love to have both live plants and decorations in their tank. They are suitable for the fish tank because they provide the fish with a lot of resting and hiding spots. It also provides them with a platform to exhibit their swimming skills.

Some of the best plants for Japan Blue Endler Guppies’ tank include java moss, fern, amazon sword, and other ideal freshwater plants.


How often do Japan Blue Endler Guppies fish need to be fed? It is very essential to feed your Japan guppy fish regularly and consistently. However, regular feeding of your guppy ensures its good health, perfect physical growth, and long lifespan.

You need to feed your adult Japan Blue Endler Guppies fish 2 times a day. Younger fish require more frequent feeding for their rapid growth. You can feed them 3 times a day to ensure adequate supply of a proper diet.

What should I feed my Japan Blue Endler Guppies? Japan Blue Endler Guppies are omnivorous fish, which means they feed on both live foods and plants. They are not picky eaters and will most likely adapt to anything you feed them as long as it is healthy. It is vital you feed them highly nutritious and healthy food.

You can feed them with hard-boiled egg yolk, food flakes, baby brine shrimps, crumbled fish-food flakes, etc. Ensure you feed them live foods two to three times in a week for better benefits.

How long can Japan Blue Endler Guppies live without food? Japan Blue Endler Guppies are hardy fish with a lot of tolerant features. Adding to its hardy feature is its ability to survive for a long period without food. The adult Japan guppy can live for two weeks without food.

However you have to take into consideration some water and tank conditions before they can be able to live that long without food. Although adult Japan guppies can live for two weeks, fries will not last more than three days without food.


One of the necessities of life is reproduction. Every living thing, including Japan Blue Endler Guppies reproduce to preserve their existence. These fish species are livebearers, which means that they give birth to their young ones alive.

Japan Blue Endler Guppies carry fertilized eggs until they mature and give birth to them alive. You will see obvious signs when the fish becomes pregnant.

You will notice courting when one chases other males from their preferred females. Next, they will chase the females until they are able to catch up and mate. Fertilization in f Japan Blue Endler Guppies is internal.

How to tell if Japan Blue Endler Guppies is pregnant? It is essential you know when your Japan Blue Endler Guppy is pregnant to provide adequate conditions to enhance their breeding process. There are several ways you can detect if your Japan guppy is pregnant or not. Here are some symptoms to watch out for;

  • There is a gradual discoloration of the gravid patch (the area where the abdomen of the fish meets its tail) as the pregnancy progresses.
  • You will notice a protruded body of the female fish as the pregnancy develops.
  • The female Japan guppy will start to hide in foliage and structures in the tank while looking for where to birth.
  • She will start swimming slower than expected.
  • The fish will eat less compared to other days and sometimes, might not seem interested in the food.

Frequently Asked Questions

Below are the frequently asked questions about this fish

What is the best substrate for Japan Blue Endler Guppies? It is a good thing to have substrate in the tank of your Japan Blue Endler Guppies. Substrates help the fish experience some livelihood and also allows you to place structures in the tank.

The best substrate for your Japan Blue Endler Guppies is fine sand. You can also add other substrates like smooth rocks and driftwoods. Most aquarists prefer fine sand substrates for their tank because it is very suitable for young guppies and adults as well

Are Japan Blue Endler Guppies Aggressive? Japan Blue Endler Guppies are generally peaceful. They don’t disturb plants or other members of the tank. However, males Japan Blue Endler Guppies can fight off one another during the mating period. This fight is usually nothing serious because none of the members will get hurt in most cases.

Can guppies and Endlers interbreed? It is very possible to interbreed endlers and guppies. Guppies and endlers can crossbreed freely and produce fertile offspring because they are members of the same genus.


Hello, I'm Jason. I'm the guy behind HelpUsFish.com. I volunteer at my local fish shop and I created this site to offer tips and advice on the fish I care for.