Hi-spot rasbora

Introduction

The Hi-spot rasbora, also known as the eyespot rasbora (Brevibora dorsiocellata), is a captivating freshwater fish cherished by aquarists for its distinctive appearance and peaceful nature. This small, schooling species features a golden-green body adorned with a prominent dark spot on its dorsal fin, resembling an "eye-spot," which contributes to its common name. Its reflective green to blue eyes add to its subtle yet stunning display. Ideal for community tanks, the Hi-spot rasbora is relatively hardy and well-suited for beginner to intermediate fishkeepers.

What makes the Hi-spot rasbora a popular choice among aquarists?

Its unique coloration, peaceful temperament, and adaptability to various tank conditions make it a favored species for community aquariums.

Is the Hi-spot rasbora suitable for novice fishkeepers?

Yes, due to its hardy nature and ease of care, it's an excellent choice for those new to the hobby.

Care and Environment

Providing optimal care for the Hi-spot rasbora involves replicating its natural habitat and meeting its specific needs.

What is the minimum tank size for a single Hi-spot rasbora?

A minimum tank size of 42.5 liters (approximately 11 gallons) is recommended to accommodate a small group, as they thrive in schools.

What are the ideal water parameters for Hi-spot rasboras?

Maintain a temperature between 20°C and 25°C (68°F to 77°F), a pH range of 5.0 to 7.5, and water hardness between 1 to 10°H. Consistent water quality is crucial for their health.

How should the tank be set up to mimic their natural environment?

Use a sandy substrate with ample vegetation, including fine-leaved plants like Myriophyllum and floating plants to provide shaded areas. Incorporate driftwood and leaf litter to create hiding spots and replicate the tannin-rich waters of their native habitat.

What type of filtration and lighting do they require?

A gentle to moderate water flow is ideal, achieved through efficient filtration systems. Lighting should be subdued, with floating plants helping to diffuse light and create a comfortable environment.

What should their diet consist of?

Hi-spot rasboras are omnivorous and will accept quality flakes or small pellets as a staple diet. Supplementing with live or frozen foods like bloodworms, brine shrimp, and daphnia will enhance their coloration and overall health.

Are there any specific challenges in keeping Hi-spot rasboras?

They are generally hardy but can be sensitive to sudden changes in water parameters. Regular monitoring and maintenance are essential to prevent stress and disease.

Origin and Habitat

The Hi-spot rasbora is native to the acidic waters and rivers of Malaysia and Sumatra. In the wild, they inhabit slow-moving streams and rivers, often found in peat swamp forests. These environments are characterized by soft, acidic water with a pH as low as 4.0, abundant aquatic vegetation, and substrates covered with leaf litter. The water is typically stained brown from tannins released by decomposing organic matter, creating a dimly lit habitat.

Where are Hi-spot rasboras naturally found?

They are indigenous to Malaysia and Sumatra, thriving in acidic, slow-moving waters.

What type of environment do they prefer in the wild?

They favor peat swamp forests with soft, acidic water, dense vegetation, and tannin-rich, dimly lit conditions.

Temperament and Compatibility

Hi-spot rasboras are peaceful, schooling fish that thrive in groups of at least six individuals. They are best suited for community tanks with other small, non-aggressive species.

How do Hi-spot rasboras behave in aquariums?

They are active swimmers that prefer the middle levels of the tank and exhibit schooling behavior, which provides them with a sense of security.

What are suitable tank mates for Hi-spot rasboras?

Compatible tank mates include other small, peaceful fish such as tetras, guppies, and small gouramis. Avoid housing them with larger, aggressive species that may intimidate or prey on them.

Can Hi-spot rasboras be kept with shrimp?

They can coexist with adult dwarf shrimp, but there's a possibility they might prey on shrimp fry.

Interesting Facts

The Hi-spot rasbora's distinctive dorsal fin spot serves as a form of mimicry, potentially deterring predators by resembling an eye. This species is also known for its reflective, emerald-green eyes, which add to its visual appeal. In the wild, they feed on small insects, crustaceans, and zooplankton, highlighting their role in the aquatic food chain.

What is the significance of the "eye-spot" on their dorsal fin?

It likely serves as a defense mechanism, confusing predators by mimicking an eye.

Why are their eyes reflective?

Their emerald-green eyes reflect light, which may help them communicate or navigate in dimly lit environments.

Sources

All information in this article has been gathered from the following reputable sources:

• aqua-fish.net
• Aqueon
• Wikipedia