Green-Barred Danio, Opsarius Pulchellus Care Stats

care requirements for green barred danio

Welcome to the world of Green-barred Danio care! In this guide, we will explore the essential statistics and facts about keeping Opsarius pulchellus in your aquarium.

From their size and habitat to their diet and behavior, we will cover everything you need to know to provide optimal care for these captivating fish.

But there's more to discover! The Green-barred Danio is known for its unique schooling behavior, which we will delve into further. We will also discuss their adaptability to various water conditions, making them a versatile choice for aquarium enthusiasts.

Stay tuned as we delve deeper into the intricacies of caring for the Green-barred Danio. By the end of this guide, you will have invaluable insights to ensure a thriving and vibrant aquarium community.

Key Takeaways

  • Green-Barred Danios prefer flowing rivers and streams with moderate water currents.
  • A minimum tank size of 55 gallons is recommended for keeping Green-Barred Danios.
  • They are primarily insectivores but can be trained to accept a variety of foods in captivity.
  • Green-Barred Danios are peaceful and lively fish that should be kept in schools of at least six fish.

Size and Habitat

variety of animal sizes

The Green-Barred Danio, known scientifically as Opsarius pulchellus, is a species of fish that can grow up to 4.3 inches (11 cm) in size and is primarily found in the Chao Phraya and Mekong river basins in Asia.

In its natural environment, this species prefers flowing rivers and streams with moderate water currents. The Green-Barred Danio is well-adapted to these habitats, with its streamlined body and strong swimming abilities.

Breeding habits of the Green-Barred Danio involve the deposition of eggs on submerged vegetation or on the substrate. The males are known to exhibit courtship behaviors, such as displaying vibrant colors and engaging in chasing and nudging behaviors towards females. Successful breeding can be achieved by providing suitable spawning sites and maintaining optimal water conditions.

Understanding the natural environment and breeding habits of the Green-Barred Danio is essential for successfully keeping and breeding this species in captivity.

Tank Requirements

A minimum tank size of 55 gallons is recommended to provide adequate swimming space for a school of Green-Barred Danio, Opsarius pulchellus. These fish require an aquarium setup that caters to their specific needs.

Consider the following tank requirements:

  1. Aquarium Setup
  • Provide an open swimming space to mimic their natural habitat in rivers.
  • Ensure the tank is securely covered as these fish are known to be excellent jumpers.
  1. Tank Decorations
  • Use a sandy substrate to replicate the riverbed where they are found.
  • Incorporate live plants and driftwood to create hiding places and add visual interest.

Creating an optimal environment for Green-Barred Danio involves careful consideration of aquarium setup and tank decorations. By providing ample swimming space and replicating their natural habitat, these fish can thrive and display their vibrant colors in your aquarium.

Diet and Behavior

impact of food on behavior

Continuing our exploration of the Green-Barred Danio, let us now delve into the intriguing aspects of their diet and behavior.

Green-Barred Danios are primarily insectivores, feeding on small insects and their larvae in the wild. However, they can be easily trained to accept a variety of foods in captivity. Flake, frozen, and freeze-dried foods can be gradually introduced into their diet using training techniques such as positive reinforcement. It is important to note that live or frozen foods should still be provided occasionally to meet their nutritional needs.

Green-Barred Danios are known for their peaceful and lively behavior. They are best kept in schools of at least six fish to promote their natural schooling behavior. This not only enhances their well-being but also reduces stress and strengthens their social hierarchy.

Schooling Behavior

Green-Barred Danios exhibit a fascinating schooling behavior that is both intricate and highly coordinated. They are known to form tight-knit groups and move together in perfect synchronization. Here are some key aspects of their schooling behavior:

  • Formation: Green-Barred Danios display a distinct hierarchical structure within their school. The dominant individuals take the lead and guide the rest of the group in their movements.
  • Communication: These fish communicate with each other through subtle body movements and visual signals. This helps them maintain their unity and respond quickly to any threats or changes in their environment.
  • Training Techniques: Green-Barred Danios can be trained to follow specific patterns or respond to certain cues. This can be achieved through positive reinforcement techniques, such as rewarding desired behavior with food or praise.
  • Social Dynamics: Within the school, individual fish establish social bonds and maintain a sense of cohesion. They rely on each other for protection and navigation, displaying a remarkable level of cooperation and teamwork.

Understanding the intricacies of their schooling behavior adds to the appeal of keeping Green-Barred Danios in aquariums and provides an opportunity for further exploration of their fascinating social dynamics.

Water Conditions

monitoring water quality parameters

The optimal water conditions for Green-Barred Danios are crucial for their health and well-being in an aquarium setting. Maintaining good water quality is of utmost importance, as it directly affects the overall health and vitality of these fish.

Green-Barred Danios thrive in water temperatures ranging from 73 to 82°F (22 – 27°C). It is essential to keep the temperature within this range to ensure their comfort and promote their natural behaviors.

Additionally, monitoring and maintaining the pH level between 6.5 and 7.5, as well as the dH level at 216, is necessary for their optimal health.

Providing clean, well-oxygenated water with proper filtration is also vital.

Compatibility With Other Fish

Maintaining compatibility with other fish species is a crucial consideration when keeping Green-Barred Danios in an aquarium, as their peaceful and lively nature may startle slower-moving species. To provide a suitable tankmate environment, it is important to choose fish that have similar aggression levels and can keep up with the danios' active swimming behavior.

Here are some suitable tankmates for Green-Barred Danios:

  1. Active and Fast-Swimming Fish:
  • Zebra Danios (Danio rerio)
  • White Cloud Mountain Minnows (Tanichthys albonubes)
  • Harlequin Rasboras (Trigonostigma heteromorpha)
  • Celestial Pearl Danios (Celestichthys margaritatus)
  1. Peaceful Community Fish:
  • Corydoras Catfish (Corydoras sp.)
  • Neon Tetras (Paracheirodon innesi)
  • Guppies (Poecilia reticulata)
  • Endler's Livebearers (Poecilia wingei)

Suitability for Community Tanks

community tank compatibility assessment

When considering the suitability of Green-Barred Danios for community tanks, it is important to select tankmates that can thrive alongside these peaceful and lively fish. Green-Barred Danios are known to be adaptable and sociable, making them a great addition to a community tank.

However, it is important to consider their interactions with other species and their behavior in group settings. These danios should be kept in schools of at least six fish to ensure their social needs are met. They are generally compatible with other non-aggressive fish that share similar water parameter requirements.

It is important to avoid slower-moving species that may be startled by the danios' energetic nature. By carefully selecting tankmates and providing a suitable environment, Green-Barred Danios can thrive in a community tank, adding vibrancy and liveliness to the aquatic ecosystem.

Additional Information From Badmans Tropical Fish

What additional information does Badmans Tropical Fish provide about the Green-Barred Danio?

According to Badmans Tropical Fish, there are a few key pieces of additional information about the Green-Barred Danio that enthusiasts may find intriguing. These include insights into the breeding habits of this beautiful fish and the various color variations that can be observed. Here is a breakdown of the information provided:


  • Green-Barred Danios are relatively easy to breed in captivity.
  • They are egg scatterers, meaning that they release their eggs among plants or other surfaces.
  • The parents should be separated from the eggs to prevent them from being eaten.
  • The eggs will hatch within a few days, and the fry can be fed infusoria or newly hatched brine shrimp.

Color Variations:

  • The Green-Barred Danio has a striking appearance, with a greenish body and prominent black bars.
  • However, there can be slight variations in coloration, with some individuals exhibiting more vibrant greens or even hints of blue.
  • In some cases, the bars may also be less pronounced or even broken, adding to the visual appeal of these fish.

Potential Inaccuracies or Missing Details

addressing potential inaccuracies and missing details

It is important to note that the provided information about the Green-Barred Danio may contain potential inaccuracies or missing details. To ensure the accuracy of the information, it is necessary to consider possible environmental factors that could affect the data. Factors such as water conditions, temperature, and habitat variability may influence the behavior and characteristics of the Green-Barred Danio. Additionally, the source of the information should be verified to ensure reliability. Consulting reputable scientific literature, aquarium experts, or conducting further research can help verify the accuracy of the information. It is essential to gather comprehensive and up-to-date data to ensure the proper care and well-being of the Green-Barred Danio in captivity.

Discussion Ideas
Possible environmental factors affecting the accuracy of the provided information
How to verify the accuracy of the information about the Green-Barred Danio

Contact Badmans Tropical Fish for More Information

To further explore the care requirements and characteristics of the Green-Barred Danio, it is recommended to seek additional information from the experts at Badmans Tropical Fish. They can provide valuable insights and fish care tips to ensure the optimal health and well-being of these fascinating creatures. By contacting Badmans Tropical Fish, you can gain access to their extensive knowledge and expertise in the field of aquarium fish care.

Here are some reasons why it is beneficial to reach out to them:

  • Extensive Experience:
  • Badmans Tropical Fish has years of experience in the industry, making them a reliable source of information.
  • They have a deep understanding of the unique needs and behaviors of the Green-Barred Danio.
  • Personalized Guidance:
  • The experts at Badmans Tropical Fish can offer personalized advice tailored to your specific tank setup and requirements.
  • They can guide you on crucial aspects such as tank size, water parameters, diet, and tank mates.

For more information and to get in touch with Badmans Tropical Fish, please visit their website or contact them through their provided contact information.

Frequently Asked Questions

How Long Do Green-Barred Danios Typically Live?

The longevity and lifespan of Green-barred Danios typically range from 3 to 5 years. These lively and peaceful fish make a great addition to community tanks, but may startle slower-moving species.

What Is the Average Price Range for Green-Barred Danios?

The average price range for Green-Barred Danios varies depending on the source and location, but they can typically be found for around $2 to $5 per fish. They are readily available for purchase online from reputable aquarium retailers.

Can Green-Barred Danios Be Kept With Other Species of Danios?

Green-barred Danios can generally be kept with other species of danios, as long as they have similar behavior and temperament. It is important to ensure compatibility and provide a suitable environment for all the fish involved.

What Are Some Common Diseases or Health Issues That Affect Green-Barred Danios?

Preventive measures for common diseases affecting Green-barred Danios include maintaining proper water quality, providing a balanced diet, and regular monitoring of tank conditions. Treatment options may include medication, quarantine, and seeking advice from a qualified aquatic veterinarian.

Are Green-Barred Danios Known to Jump Out of the Tank?

Green-barred danios are known to be jumpers, so it is important to provide a secure tank setup. To prevent them from jumping out, ensure the tank has a tight-fitting lid and that there are no gaps or openings for them to escape.


In conclusion, the Green-barred Danio, Opsarius pulchellus, is a captivating and adaptable fish species that adds vibrancy and life to any aquarium.

With their energetic and playful nature, they thrive in schools of at least six fish, creating a harmonious and peaceful community.

These insectivores can be trained to consume a variety of foods, making them adaptable to different feeding regimens.

Highly adaptable to various water conditions, the Green-barred Danio is a valuable addition to any aquatic setup.

For more information, consult Badmans Tropical Fish.