blue demoiselle
Scientific name | Chrysiptera cyanea |
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Descriptor | Quoy & Gaimard |
Year of description | 1828 |
IUCN category (World) | LC |
Family | Pomacentridae |
Genus | Chrysiptera |
Introduction
Chrysiptera cyanea, commonly known as blue demoiselle, is a salt water fish.
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Who is it?
Morphology
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Average size4 cm
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Maximum size8 cm
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Longevity3 year
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Average size4 cm
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Maximum size8 cm
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Longevity3 year
How to recognize the blue demoiselle ?
The blue demoiselle measures around 4 cm. The dominant males can however reach 8 cm. This fish is bicolore with a predominantly jaune and bleu body.
Sexual dimorphism
The adult male is bigger than the female.
Behaviour & Life cycle
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dietomnivorous
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Sociabilityliving in shoals
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territorialYes
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Way of livingdiurnal
The blue demoiselle is a fish living in shoals naturally found near the bottom. This species is omnivorous .
The blue demoiselle is a territorial animal that does not tolerate any incursions into its living area. It is particularly virulent against other territorial species and it can provoke heated fights. Relationships between conspecifics are also hectic, with each seeking to secure its place. In a constant quest for dominance, the dominant males of this species cannot stand each other. The battle between two individuals can be intense and violent. It will result in the submission and sometimes even death of one of the protagonists.
Reproduction
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Reproductionovipare qui pond sur substrat découvert
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Hermaphroditeprotogynous
The blue demoiselle is a fish ovipare qui pond sur substrat découvert. always born female. Growing up, individuals will change sex to become male, this is called successive hermaphroditism of the protogynous type.
Harmless species
This species does not represent any particular threats to humans when encountered in its natural environment.
Where to find it?
What is its habitat?
Natural environment characteristics
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Temperature22 - 26 °C
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Depth0 - 30 m
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FlowStrong, Medium and Slow
Biotope presentation
The blue demoiselle is most often found at a depth between 0m and 30m. However, it is not impossible to find this species at other depths.
Species of the same biotope
Main recommendations for fishkeeping
Deontology
In order to preserve wildlife, if you acquire this animal, it must not be released into the wild. See also, the Fishipedia charter.
Fishipedia supports the practice of responsible and environmentally friendly aquarium keeping. We encourage maintenance if it is motivated by a desire to understand the biological functioning of living things and if it is done with respect for animal life.
We believe that aquaristics is an opening to the discovery of aquatic environments, especially freshwater, and that this knowledge is necessary to better protect and respect these environments. Logically, we refute the compulsive purchase of animals that would not find a sufficient and / or adapted place in the host aquarium.
Our recommendations
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Min volume200 liters
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Population min1
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Temperature22 - 26 °C
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pH (acidity)8.2 - 8.4
Characteristics
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Difficulty breedingeasy
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Robustnessrobust
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Behaviourmoderately aggressive
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Availabilitystandard
General reminders
It is strongly advised to read the complete dedicated file and to get information on the feedbacks of maintenance of the envisaged animal, this to avoid any potential conflict whose end result is generally the death of the individual (or the other inhabitants). It is important not to overload your aquarium to limit pollution. This will make maintenance easier.
General reminder on maintenance datas
Le démarrage d'un aquarium est une partie primordiale pour l'équilibre et le bien-être des poissons. Lorsque l'on met en eau un aquarium, l'eau passe naturellement par un cycle biologique : le cycle de l'azote. Celui-ci dure environ trois semaines. Tous les 2 jours, nous vous conseillons de tester votre eau jusqu'à ce que le taux de nitrite soit à zéro pendant plusieurs jours d'affilée.
Pour accélérer ce cycle, vous pouvez utiliser un activateur de bactéries comme JBL Denitrol. Cette solution riche en bactéries vivantes et enzymes permet une mise en place rapide du cycle de l'azote. Les poissons peuvent alors être introduits plus rapidement.
Il est important de tester l'eau de son aquarium régulièrement pour maintenir un environnement sain pour les poissons et les autres habitants. Les tests d'eau permettent de mesurer les niveaux de différents paramètres tels que le pH, la dureté totale, ainsi que les taux de nitrates, de nitrites et d'ammoniaque.
Pour réaliser ces tests, vous pouvez utiliser des produits d'analyse spécialisés tels que JBL ProScan qui permet de réaliser un diagnostic de l'eau directement via un smartphone. Il existe également des coffrets de tests plus classiques de bandelettes, comme JBL PROAQUATEST.
En cas d’usage de l’eau du robinet, vous pouvez utiliser un conditionneur d’eau de type Biotopol de JBL pour éliminer les substances nocives comme le chlore, le cuivre, le plomb et le zinc. Les conditionneurs d'eau garantissent une meilleure santé aux poissons et une meilleure croissance des plantes.
Chlorine and chloramine are dangerous for the health of animals. Used to disinfect water, these agents are present in significant quantities in tap water. We recommend using an anti-chlorine agent every time you change the water. In addition to chlorine, treatments and medicines sold for aquarium use sometimes contain dangerous heavy metals in high doses.
Specific needs for the blue demoiselle
The blue demoiselle is a marine species which lives naturally at a temperature between 22 °C and 26 °C. For proper maintenance, the temperature should never exceed the 29°C for long periods. Nitrate levels should remain below 50mg/L. To keep the water clean and unpolluted, plan on changing 20% to 30% of the water volume each month. In seawater, it is also possible to remove nitrates using one of the following methods: Jaubert, denitrator on sulfur, biopeletts, vodka method.
Breeding this species is accessible to any hobbyist. It is recommended to follow some basic rules and to be rigorous to achieve a good maintenance.
Cohabitation & Environment
Being a living in shoals fish, it is advisable to install at least 1 individuals in an aquarium of 200 liters minimum (for 100 cm of frontage). Group maintenance is a prerequisite to ensure their well-being. Lonely individuals tend to quickly become stressed and become especially susceptible to disease.
The blue demoiselle has a strong character. Its maintenance with territorial neighbors in an inadequate volume will generate stress. ndeed, it will not hesitate to fight to protect its territory and to dominate its neighbors. It is important to think carefully about the constitution of the future population to avoid this kind of inconvenience. The aquarium should be arranged so that each species can comfortably define its own territory.
The males of this species do not support each other, the maintenance of several of them in the same tank is strongly disadvised.
As previously said, The blue demoiselle is a species that lives naturally in the current. Thus, we advise the installation of an oversized filtration system (10 to 20 times the volume of the tank) in order to guarantee a strong current and especially a strong oxygenation. A venturi system will improve the dissolved oxygen rate during summer.
Tips for feeding
The blue demoiselle is omnivorous.
This species can eat dry food (flakes, pellets), fresh food and frozen food. To avoid deficiencies, it is recommended to vary the types of food.
You should not overfeed your residents to avoid polluting the water. For most species, it is better to feed a few small portions each day rather than one large meal.
Reproduction protocol
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Maintenance difficultyvery hard
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egg-laying protectionYes
Hybridization risks
In general, it is advised not to mix several species of the same genus or different varieties of the same species, to avoid the risks of hybridization.
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To go further
Sources & Contributions
Participation & Validation
The Fishipedia team and specialist contributors are committed to providing high-quality content. However, although the information comes from scientific sources or testimonials from specialists, the cards may contain inaccuracies.
Adrien Falzon
Benoit Chartrer
Translation
Translation done with the valuable contribution of our translators, who make this information available to a wider audience. We sincerely thank them for their commitment.