Barred Rainbowfish - Chilatherina fasciata Fish Profile & Care Guide
Introduction
The Barred Rainbowfish (Chilatherina fasciata) is a species that requires relatively straightforward care and is commonly maintained by individuals with interest in aquariums. These fish possess resilient characteristics, promoting their suitability for both novice and experienced aquarists, as they exhibit peaceful behaviour and dynamic liveliness.
Given their shoaling nature, it is crucial to house Barred Rainbowfish in groups of no less than six individuals to foster a sense of security and confidence. Additionally, in the company of their conspecifics, the male Barred Rainbowfish will enhance their vibrant colouration, showcasing their most appealing hues.
When selecting tankmates, consider the compatibility of other species, such as Rainbowfish, Livebearers, small Catfish species, Peacock Gudgeons, and Panda Garras, as they make excellent choices for cohabitation.
While successful maintenance of Barred Rainbowfish has been achieved in tanks measuring approximately 3 feet in length, it is important to note their rapid swimming capabilities. Therefore, to ensure optimal conditions, providing a tank that is at least 4 feet long is advisable. When arranging the aquarium, strive to replicate their natural habitat by incorporating ample hiding spots and sheltered areas. Additionally, employing a secure lid to prevent potential escapes is highly recommended, given their jumping tendencies.
The Barred Rainbowfish exhibits considerable variation in body colouration and markings across different geographical locations, primarily attributed to effective natural barriers in various populations within New Guinea. Typically, these fish exhibit a body colour ranging from brown to bluish-green on the upper half, transitioning to a white to yellowish shade on the lower half, with a distinct dark mid-lateral stripe. Notably, scales in this region often display pale yellow borders. In addition, male Barred Rainbowfish commonly feature multiple diffuse blackish bars on the lower sides, positioned above the front half of the anal-fin base, while their fins assume hues of dusky grey to yellowish.
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Sexual Dimorphism
Distinguishing between male and female Barred Rainbowfish can be accomplished with relative ease. Males typically possess a deeper body structure compared to females, and this distinction becomes more discernible as they mature. Furthermore, the posterior profile of the dorsal and anal fins in males exhibits a more pointed and elongated appearance.
In contrast, females display longer rays at the anterior portion of the dorsal fin, differing from males, whose longer rays are found in the posterior region. Another noteworthy characteristic is the enhanced vibrancy observed in mature males, particularly in their dorsal and anal fins, often exhibiting shades of reddish or yellowish hues.
During the spawning process, the colouration of males becomes particularly intense, with the top of their heads radiating a brilliant bronze to vermilion hue. In contrast, females generally present a silver to olive overall colouration, accompanied by transparent fins.
Quick Facts
| Scientific Name | Chilatherina fasciata |
|---|---|
| Year Described | 1913 |
| Other Names | Kali Biru Rainbowfish |
| Kingdom | Animalia |
| Classification | Actinopterygii |
| Order | Atheriniformes |
| Family | Melanotaeniidae |
| Genus | Chilatherina |
| Origins | Papua New Guinea |
| Approx Max Size | 12 cm |
| Temperament | Peaceful |
| Aquarium Level | Middle - Top |
| Difficulty | Beginner - Intermediate |
| Shoaling | Yes |
| Best kept as | Groups 6+ |
| Diet & Feeding | Omnivore |
| Reproduction | Egg Depositor |
| Average Lifespan | Up to 8 Years |
Water Parameters
| Water Type | Freshwater |
|---|---|
| pH | 7.0 - 8.0 |
| GH | 5 - 15 |
| ℉ | 82 - 90 |
|---|---|
| ℃ | 28 - 32 |
Natural Habitat
The distribution of Barred Rainbowfish encompasses various geographical locations, including the mouth of the Sermowai River and the tributaries of the Markham, Ramu, Sepik, Pual, and Mamberamo River systems in northern New Guinea. Additionally, specimens have been collected from Lake Wanam, located near Lae in Papua New Guinea. Barred Rainbowfish exhibit a versatile habitat range, inhabiting both lowland and highland regions, with elevations reaching approximately 500 meters (1640 feet) above sea level.
Typically, Barred Rainbowfish inhabit clear, slow-flowing streams that traverse the rainforest; however, they have also been observed in lake environments. These aquatic habitats commonly feature a substrate predominantly composed of gravel or sand, interspersed with an abundance of leaves and other organic debris. In addition, these Rainbowfish display a preference for waters that receive ample exposure to sunlight, potentially due to their inclination to feed on algae present in such conditions.
Breeding
To facilitate the successful breeding of Barred Rainbowfish, it is advisable to maintain a group composition with a minimum of 2 to 3 females for each male. This ratio is crucial due to the potential aggression displayed by males towards females during the breeding period. Selecting females that are larger than males can mitigate the risk associated with male aggression, enhancing the safety of the females.
Encourage breeding behaviour in Barred Rainbowfish by providing them with an ample supply of live food and a suitable spawning medium. Examples of suitable spawning mediums include densely grown java moss or a dedicated spawning mop.
The Barred Rainbowfish female possesses the capability to release up to 30 eggs per day. To optimize the chances of a high survival rate, transferring the spawning medium containing the eggs to a separate container is advisable. By maintaining the water temperature within the upper range of the recommended parameters, the eggs typically hatch within 8-10 days. Lower temperatures will prolong the incubation period.
Initially, the fry can be nourished with infusoria and finely ground flake food until they reach a size suitable for consuming newly hatched brine shrimp and gradually transitioning to whole flakes.
Diet & Feeding
Ensuring a diverse and nourishing diet for your Barred Rainbowfish within the aquarium setting is of paramount importance. In their natural habitat, these fish primarily consume a diet consisting of insects, diminutive crustaceans, and filamentous green algae. It is recommended to emulate this dietary composition within the aquarium environment by offering algae-based prepared foods, live insect larvae, and brine shrimp. In addition, encouraging the growth of natural algae within the tank can also provide valuable nutritional benefits for these fish.
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Published: 01 Jun 2023
Last Updated: 01 Jun 2023