Dwarf rasbora
Introduction
The Dwarf rasbora (Boraras maculatus), also known as the Spotted rasbora, is a diminutive freshwater fish cherished by aquarists for its vibrant coloration and peaceful demeanor. Reaching a maximum size of approximately 2.5 cm (1 inch), this species is ideal for nano aquariums and planted tanks. Its manageable care requirements make it suitable for both novice and intermediate fishkeepers seeking to add a splash of color to their aquatic setups.
What makes the Dwarf rasbora appealing to aquarists?
Its small size, striking colors, and gentle nature make it a favorite among hobbyists, especially those with limited space.
Is the Dwarf rasbora suitable for beginners?
Yes, with proper care and attention to water parameters, beginners can successfully keep Dwarf rasboras.
Can Dwarf rasboras be kept in community tanks?
They can coexist with other small, peaceful species but thrive best in species-specific setups due to their timid nature.
Care and Environment
Caring for Dwarf rasboras involves replicating their natural habitat to ensure their health and vitality.
What is the minimum tank size for Dwarf rasboras?
A minimum of 30 liters is recommended for a small group, but larger tanks provide more stability and space.
What water parameters do Dwarf rasboras require?
They thrive in temperatures between 24–26°C, pH levels of 4.5–6.5, and soft water with hardness between 1–5°H.
How should the tank be decorated for Dwarf rasboras?
Dense planting with floating plants to diffuse light, along with driftwood and leaf litter, mimics their natural environment.
Filtration should be gentle to avoid strong currents, and lighting should be subdued to replicate the dimly lit waters they inhabit. Feeding should include high-quality micro-pellets or flakes, supplemented with live or frozen foods like brine shrimp and daphnia. Regular water changes and monitoring are essential, as Dwarf rasboras are sensitive to fluctuations in water quality.
Origin and Habitat
Native to Southeast Asia, Dwarf rasboras are found in Thailand, Peninsular Malaysia, and Singapore. They inhabit blackwater streams and rivers connected to peat swamps, characterized by soft, acidic waters rich in tannins. These environments are typically shaded, with dense vegetation and leaf litter providing ample hiding spots. The water is often stained dark due to decomposing organic material, creating a unique ecosystem.
Where are Dwarf rasboras naturally found?
They are native to regions in Southeast Asia, including Thailand, Malaysia, and Singapore.
What type of water bodies do they inhabit?
They live in slow-moving blackwater streams and peat swamps with dense vegetation.
Why is their natural habitat's water dark?
The dark coloration is due to tannins released from decomposing plant material.
Temperament and Compatibility
Dwarf rasboras are peaceful, shoaling fish that should be kept in groups of at least eight to promote natural behaviors and reduce stress. They are best housed with similarly sized, non-aggressive species. Suitable tank mates include Pygmy Corydoras, Ember Tetras, and small shrimp species. Avoid larger or more boisterous fish, as they can intimidate Dwarf rasboras, leading to stress and hiding behaviors.
Are Dwarf rasboras aggressive?
No, they are peaceful and thrive in groups.
What are suitable tank mates for Dwarf rasboras?
Small, peaceful species like Pygmy Corydoras and Ember Tetras are ideal.
Can they be kept with larger fish?
It's best to avoid larger fish, as they may stress or prey on Dwarf rasboras.
Interesting Facts
Dwarf rasboras are known for their vibrant red and black markings, which become more pronounced in well-maintained environments. They are egg scatterers, laying eggs among fine-leaved plants without exhibiting parental care. In the wild, they feed on small insects and zooplankton, highlighting the importance of a varied diet in captivity. Their natural habitats are often under threat due to human activities, emphasizing the need for conservation efforts.
Do Dwarf rasboras care for their young?
No, they do not exhibit parental care and may eat their own eggs.
What do they eat in the wild?
They feed on small insects and zooplankton.
Why are their natural habitats threatened?
Human development and farming activities are encroaching on their environments.
Sources
All information in this article has been gathered from the following reputable sources:
Overview
Recommended Tank Size 15.9 Gallon (for groups of 8 or more) |
Minimum Group Size 8 |
Minimum Tank Volume 7.9 Gallon |
Maximum Adult Length 1 inch |
Average Adult Length 0.8 inch |
Shoaling (6+ required) Yes |
Preferred Water Type Soft, acidic freshwater |
Temperature Range (°C) 24–26 |
pH Range 4.5–6.5 |
Water Hardness (dGH) 1–5 |
Typical Lifespan (years) 3 years |