Maximum size : 5 cm

Hikari Danio - Danio sp. Hikari : Complete Fish Profile & Care Guide

Table of contents


Discover the captivating world of Hikari Danios (Danio sp. Hikari), a fish species that embodies an enticing blend of beauty, tranquillity, and adaptability. With their peaceful temperament, robust nature, and impressive ability to thrive across a wide range of water parameters and temperatures, these charismatic fish are an excellent choice for both novice aquarists and experienced hobbyists alike. Their versatile nature also makes them ideal inhabitants of a well-appointed community aquarium, providing an opportunity to create a harmonious underwater ecosystem.

When selecting tankmates for Hikari Danios, it is advisable to consider species of similar size and temperament. Tetras, other small Cyprinids, Rainbowfish, livebearers, Loaches, and Catfish all make suitable companions. However, caution should be exercised with fish boasting long and intricate finnage, as there is a risk of nipping behaviour. As a schooling species, Hikari Danios flourish in the company of their own kind, and a group of at least six individuals, preferably more, should be maintained. Not only does this foster a sense of security, but it also results in a captivating display, with males showcasing their most vibrant colours as they compete for the attention of females.

Creating an enticing habitat for Hikari Danios entails a well-planted aquarium adorned with a darker substrate, as this accentuates their natural beauty. Incorporating gravel, rocks of various sizes, and smooth stones is recommended to achieve an environment reminiscent of a flowing stream or river. Additional filter outlets or powerheads can be employed to simulate gentle currents, but it is important to avoid excessively fast flows, as these small Danios typically inhabit calmer stretches of water in their natural habitat. Hardy aquatic plants like Bolbitis, Anubias, and Microsorum, which can be affixed to the decor, along with driftwood roots and branches, further enhance the visual appeal and provide natural hiding spots. Proper oxygenation and filtration are vital to emulate the cool, pristine mountain streams from which these Danios originate.

While embarking on this aquatic journey, ensuring the aquarium has a secure, tightly-fitting lid is essential. Hikari Danios possess remarkable jumping abilities and can effortlessly navigate through even the smallest gaps. By diligently implementing these measures, you can create a beautiful aquatic haven that truly reflects the remarkable nature of Hikari Danios.

Hikari Danio Photos

Sexual Dimorphism

Distinguishing between the male and female Hikari Danio is a straightforward task facilitated by their distinct colouration patterns. Males exhibit a captivating blend of yellowish-turquoise hues that extend from their bodies to their fins, creating a vibrant and eye-catching display. In contrast, females showcase silvery-blue bodies adorned with turquoise patches, complemented by hyaline fins imbued with subtle yellow accents. This notable sexual dimorphism allows observers to differentiate between the genders readily, accentuating the allure and visual diversity of these captivating Danios.

Quick Facts

Scientific NameDanio sp. Hikari
Year Described2002
Other NamesHikari Yellow Danio, Hikari Blue Danio
Max Size5 cm
Aquarium LevelMiddle
DifficultyBeginner - Intermediate
Best kept asGroups 6+
Diet & FeedingOmnivore
LifespanUp to 5 Years

Water Parameters

Water TypeFreshwater
pH 6.5 - 7.5
GH 2 - 18
TDS 18 - 215
Ideal Temperature
64 - 79
17 - 26

Natural Habitat

The captivating Hikari Danio, discovered within the enchanting confines of the Tanintharyi River drainage in southern Myanmar, adds a touch of mystique to the aquatic realm. As residents of this pristine Southeast Asian region, these Danios have carved their niche in the very heart of nature's beauty. While the specifics of their natural habitat remain shrouded in mystery, one can envision their presence within crystal-clear, slow-flowing waters of streams and small rivers, likely nestled amidst lush, verdant forests. It is within this breathtaking backdrop that these remarkable creatures thrive, harmonizing with their surroundings and captivating those fortunate enough to behold them.

A relatively recent addition to the aquarium hobby, the Hikari Danio emerged in 2002, initially believed to be a subspecies of the Blue Danio. However, through meticulous DNA testing conducted in the United States, their distinct genetic makeup became apparent, establishing them as a separate and unique species. This discovery only deepens the allure surrounding these Danios, offering further insight into their extraordinary nature and distinctiveness within the aquatic world.

While their scientific name remains elusive at present, the Hikari Danio's presence within the aquarium hobby is a testament to the ongoing exploration and discovery of aquatic treasures. As we continue to unravel the mysteries of this species, we are reminded of the vast wonders that await us in the intricate tapestry of our natural world.


Hikari Danios follow an egg-scattering spawning behaviour, similar to many other Danio species. Therefore, a separate breeding tank is recommended to enhance the production of fry. This breeding tank should be elongated and shallow in design, with the water level slightly higher than the standard aquarium setup. Creating a conducive environment for spawning involves the addition of java moss or fine-leaved plants, which provide suitable surfaces for the Danios to scatter their eggs. Alternatively, the use of marbles or pebbles on the tank bottom can serve as an alternative option in the absence of live plants.

Prior to introducing a pair or group of Danios into the breeding tank, it is essential to condition them with an abundance of live or frozen food. Once the females exhibit a plump and well-nourished appearance, they should be transferred to the breeding tank. If the conditions align with their preferences, the female will release her eggs into the water while the male promptly fertilizes them. Typically, spawning is triggered by the first rays of morning sunlight gently caressing the tank glass.

Following the scattering of eggs, it is advisable to promptly return the adult Danios to the main aquarium, as their presence poses a risk of consuming both the eggs and fry if given the opportunity. The incubation period of the eggs is influenced by temperature, typically ranging between 24 and 36 hours until hatching occurs. Subsequently, after a few additional days, the young fry will become free-swimming, marking an important milestone in their development. During this early stage, providing appropriate nourishment is vital. Microworms or newly hatched brine shrimp serve as suitable initial food sources for the fry until they reach a size capable of accepting the same diet as the adult Danios.

By understanding and meticulously attending to these breeding requirements, the successful reproduction and growth of Hikari Danios can be achieved, contributing to the perpetuation of their captivating presence in the aquarium.

Diet & feeding

Hikari Danios exhibit a versatile appetite within the aquarium, readily accepting various food options. While they are not particularly selective eaters, providing them with a high-quality dried product as their staple diet is advisable. Optimal choices include flakes, micropellets, or granules that meet their nutritional requirements. Given their energetic nature and higher nutrient needs, selecting a dried food that caters to these demands is essential for their overall well-being.

Supplementing their diet with small portions of live, frozen, or freeze-dried foods further enriches their nutritional intake. Offerings such as mosquito larvae, brine shrimp, and daphnia serve as valuable additions, aiding in maintaining their vibrant colours and promoting overall health. Providing multiple feedings throughout the day is recommended to ensure optimal nutrition. However, it is important to offer only what the fish can consume within three minutes or less during each feeding session. This controlled approach prevents overfeeding and helps maintain water quality within the aquarium.

By diligently attending to their dietary needs and incorporating a balanced feeding regimen, Hikari Danios can thrive, showcasing their true beauty and vitality.

Other Danios of interest