Bleher’s rainbowfish

Introduction

Bleher’s rainbowfish (Chilatherina bleheri) is a vibrant and energetic species that has captivated aquarists with its striking coloration and lively behavior. Native to Indonesia, this fish displays a shimmering silver to blue-green body that transitions into pastel shades of yellow to red, making it a standout addition to any freshwater aquarium. Generally considered easy to care for, Bleher’s rainbowfish is well-suited for beginner to intermediate fishkeepers seeking a peaceful and active community fish.

Care and Environment

Providing optimal care for Bleher’s rainbowfish involves creating an environment that mirrors their natural habitat and meets their specific needs.

What is the minimum tank size required for Bleher’s rainbowfish?

A minimum tank size of 90 liters is recommended to accommodate a small group of these active swimmers.

What are the ideal water parameters for Bleher’s rainbowfish?

Maintain water temperatures between 23°C and 27°C, with a pH range of 7.0 to 7.5, and water hardness between 8 to 15 dGH.

How should the tank be set up to suit Bleher’s rainbowfish?

Use a dark substrate to mimic their natural environment and include plenty of aquatic plants, such as Vallisneria and Amazon swords, to provide shelter and breeding sites. Ensure there is ample open space for swimming.

Bleher’s rainbowfish are omnivorous and thrive on a varied diet. Offer high-quality flake foods, small pellets, and live or frozen foods like brine shrimp and bloodworms to ensure balanced nutrition.

These fish are known to be excellent jumpers, so a well-secured aquarium lid is essential to prevent escapes. Regular water changes and efficient filtration are crucial to maintain water quality and support their health.

Origin and Habitat

Bleher’s rainbowfish is endemic to Lake Holmes (Danau Bira) in the lower Mamberamo River system of Irian Jaya, Indonesia. This region features shallow, vegetation-rich waters surrounded by jungle, providing a natural environment abundant in aquatic and marsh plants. The lakes are relatively young and situated approximately 430 meters above sea level in a mountainous terrain.

Temperament and Compatibility

Bleher’s rainbowfish are peaceful and social, making them excellent candidates for community aquariums. They thrive in groups of six or more, which helps reduce stress and encourages natural behaviors.

What are suitable tank mates for Bleher’s rainbowfish?

Compatible tank mates include other peaceful, similarly sized species such as Corydoras catfish, Bristlenose catfish, Platies, Mollies, and various Tetra species.

Are there any species that should be avoided as tank mates?

Avoid housing them with aggressive or significantly larger fish that may intimidate or prey upon them. Additionally, very small species or invertebrates like shrimp may be at risk of being eaten.

How does Bleher’s rainbowfish behave during breeding?

During breeding, males may display heightened coloration and become more territorial. Providing ample hiding spots and maintaining a higher ratio of females to males can help mitigate aggression.

Interesting Facts

Bleher’s rainbowfish was first collected by Heiko Bleher in 1982 and is named in his honor.

In their natural habitat, these fish are found in relatively young lakes, possibly only a few decades old, surrounded by jungle and located at elevations of about 430 meters above sea level.

Bleher’s rainbowfish are known for their jumping ability, so a secure aquarium lid is essential to prevent escapes.

Sources

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

• coburgaquarium.com.au

• fishbase.se

• aquarium-fish.info