Magnificent Killifish - Hypsolebias magnificus : Complete Fish Profile & Care Guide
Table of contents
Introduction
Magnificent Killifish (Hypsolebias magnificus) are a captivating and peaceful species renowned for its vibrant colours and resilient nature. Their compact size makes them an ideal choice for nano, planted, and community aquarium setups. While suitable for beginner aquarists, successful breeding and rearing of the fry require careful attention and consideration.
For optimal care, it is recommended to house Magnificent Killifish in a species-only aquarium, preferably with one male and 3 to 4 females. Alternatively, they can coexist harmoniously with smaller and more peaceful tankmates such as Rasboras, Danios, smaller Tetras, and Corydoras Catfish, as well as Shrimp and aquatic Snails. However, it is advisable to avoid housing them with long-finned species to prevent fin-nipping, as well as larger, more aggressive tankmates that may intimidate and outcompete them for food.
Creating an ideal environment for Magnificent Killifish involves maintaining a very slow to still water current, accompanied by gentle filtration and slightly soft acidic or neutral water conditions. These fish do not disturb aquatic plants and prefer subdued lighting, making the addition of floating plants a suitable choice. However, ensuring that the aquarium is equipped with a secure, tight-fitting lid is crucial, as Killifish are known for their jumping behaviour.
Male Magnificent Killifish exhibit striking colouration, featuring golden, blue, and red hues on their bodies. The body is adorned with light, small, and short marks arranged in horizontal lines, while several dark or sometimes red transverse bands are typically visible on the body flanks, particularly towards the front.
The unpaired fins are usually dark brown, embellished with numerous bluish or yellowish-white dashes, lines, or spots. Pectoral and pelvic fins tend to be reddish or orange in colour, lacking distinctive markings. In contrast, females display a plain greyish or greyish-brown colouration, with their fins mostly transparent.
Magnificent Killifish Photos
Sexual Dimorphism
Distinguishing between male and female Magnificent Killifish is a relatively straightforward process. Males exhibit prominent characteristics that distinguish them from their female counterparts. They display vibrant and visually striking colours, often accompanied by intricate patterns that may vary depending on the geographical origin of the fish. Furthermore, males tend to be slightly larger in size, featuring a robust and high-backed physique.
In contrast, females possess a slimmer body shape and present a more subdued appearance, lacking the vibrant colouration and intricate patterning seen in males. They typically exhibit minimal to no distinct colouration, allowing for easy differentiation from their male counterparts.
Quick Facts
| Scientific Name | Hypsolebias magnificus |
|---|---|
| Year Described | 1991 |
| Kingdom | Animalia |
| Classification | Actinopterygii |
| Order | Cyprinodontiformes |
| Family | Rivulidae |
| Genus | Hypsolebias |
| Origins | Brazil |
| Max Size | 5 cm |
| Temperament | Peaceful |
| Aquarium Level | Bottom - Middle |
| Difficulty | Beginner - Intermediate |
| Shoaling | No |
| Best kept as | 3 Females per Male |
| Diet & Feeding | Omnivore |
| Reproduction | Egg Depositor |
| Average Lifespan | Up to 2 Years |
Water Parameters
| Water Type | Freshwater |
|---|---|
| pH | 6.5 - 7.5 |
| GH | 2 - 12 |
| ℉ | 71 - 79 |
|---|---|
| ℃ | 22 - 26 |
Natural Habitat
The Magnificent Killifish, a native species, can be found within the Middle São Francisco River Basin, located in Brazil, South America. These Killifish primarily reside in water holes, streams, and marshes characterized by soft substrates.
Breeding
In their natural habitat, the Magnificent Killifish encounter a challenging environment marked by seasonal dry periods. During this time, adult fish perish, leaving fertilized eggs within the substrate.
These resilient eggs possess remarkable desiccation resistance and remain in a dormant state until the return of the rainy season, typically occurring around 5 to 6 months later. Upon the arrival of rain, the eggs hatch, and the fry undergo rapid development, achieving sexual maturity within approximately three weeks.
Within an aquarium setting, Magnificent Killifish engage in bottom-spawning behaviour, depositing their eggs onto the substrate. To replicate this natural process, many aquarists utilize peat as a substrate or employ dedicated containers positioned at the aquarium's bottom for optimal egg deposition.
During each spawning embrace, the adult fish release a small batch of eggs, with the potential yield reaching up to 100 eggs when provided with an ideal diet. To promote successful hatching, collecting the peat containing the eggs is crucial, drying it to a pipe tobacco-like consistency and storing it within a temperature range of 79 to 82 degrees Fahrenheit for several weeks.
The duration of the incubation period varies, influenced by factors such as temperature and the age of the fish. The readiness of the eggs for hatching can be determined through microscopic examination, which reveals the presence of a discernible eye surrounded by a golden ring. Once the eggs are deemed prepared, rehydration of the peat becomes necessary. Within approximately two hours, the fry will start to emerge.
Initially, the newly hatched fry requires nourishment from infusoria-type foods such as rotifers or vinegar eels. As they continue to develop, their diet can progress to include microworms and baby brine shrimp. Given the rapid growth rate of the fry, ensuring an ample supply of suitable food is essential to support their proper development and overall well-being.
Diet & Feeding
To ensure the optimal health and reproductive success of Magnificent Killifish, it is essential to provide them with a varied and balanced diet. These fish thrive on a diverse feeding regimen, primarily focusing on live and frozen foods such as brine shrimp, daphnia, and bloodworms.
Incorporating these nutrient-rich options into their diet not only enhances their overall well-being but can also contribute to increased egg production, supporting their reproductive success.
Furthermore, through gradual acclimation, these Killifish can be trained to accept high-quality dried foods, including flakes, granules, and pellets. This offers a convenient and well-rounded dietary option, ensuring their nutritional needs are met.
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