bluetail trunkfish

Scientific name Ostracion cyanurus
Descriptor Rüppell
Year of description 1828
IUCN category NE
Family Ostraciidae
Genus Ostracion
Ostracion cyanurus Ostracion cyanurus

Introduction

Ostracion cyanurus, commonly known as bluetail trunkfish, is a salt water fish.

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Who is it?

Morphology

  • Average size
    12 cm
  • Maximum size
    15 cm
  • Shape
    Balloon and near
  • Pattern
    circle pattern
  • Average size
    12 cm
  • Maximum size
    15 cm
  • Shape
    Balloon and near
  • Pattern
    circle pattern

How to recognize the bluetail trunkfish ?

The bluetail trunkfish measures around 12 cm. The dominant males can however reach 15 cm. This fish is bicolore with a predominantly jaune, bleu and blanc body. The also has noir circle pattern.

Sexual dimorphism

The adult male is bigger than the female.

Behaviour & Life cycle

  • diet
    omnivorous with herbivorous tendency
  • Sociability
    solitary
  • territorial
    Yes
  • Way of living
    diurnal

Tetrodotoxin or TTX is a neurotoxin produced by bacteria. In this species, it is present in large quantities in the liver, viscera and gonads but is also found in the skin.

Females are more toxic than males, this is due to the high concentration of TTX in the ovaries.

When poisoned, TTX is fatal in more than 50% of cases. This neurotoxin acts on the pores of the sodium channels, which stops the passage of nerve impulses, resulting in partial or total paralysis. Death is most often due to respiratory paralysis triggering cardiac arrest by collapse.

The bluetail trunkfish is a fish solitary naturally found at mid-depth and near the bottom. This species is omnivorous with herbivorous tendency .

Although slightly territorial, the bluetail trunkfish is a rather peaceful animal that generally behaves in a peaceful manner with other species. It should be noted that it is sometimes less tolerant with its conspecifics.

Reproduction

  • Reproduction
    dont le mode de reproduction est encore inconnu
  • Hermaphrodite
    protogynous

The bluetail trunkfish is a fish dont le mode de reproduction est encore inconnu. 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?

Where to see this species?

What is its habitat?

Natural environment characteristics

  • Temperature
    22 - 28 °C
  • Depth
    5 - 15 m
  • Flow
    Medium and Slow

Biotope presentation

The bluetail trunkfish is most often found at a depth between 5m and 15m. 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

  • Min volume
    300 liters
  • Population min
    1
  • Temperature
    22 - 28 °C

Characteristics

  • Difficulty breeding
    hard
  • Robustness
    tolerant
  • Behaviour
    peaceful
  • Availability
    unavailable

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.

The realization of a seawater aquarium requires certain knowledge beforehand. Seawater is generally synthetic, consisting of reverse osmosis water and synthetic salt at a level of 33g / liters. It is also possible to take seawater directly (after making sure that the water is not polluted). The operation of a seawater aquarium is done in three phases: the installation of a living stone decoration, the introduction of invertebrates one month later, and the introduction of fish 3 months later. It is essential to wait as long as possible before to introduce the animals so that the micro-fauna has had time to develop well. The balance and the physico-chemical stability are fundamental for the success of this type of tank.

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 bluetail trunkfish

The bluetail trunkfish is a marine species which lives naturally at a temperature between 22 °C and 28 °C. For proper maintenance, the temperature should never exceed the 31°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.

The bluetail trunkfish is a species whose maintenance is rather reserved for informed aquarists . It can only be successfully carried out by carrying out a minimum of documentation work. Special husbandry conditions can easily lead to the death of the species or other animals.

Formal incompatibilities

Be careful, the bluetail trunkfish is incompatible with molluscs and crustacean.

Cohabitation & Environment

In a community aquarium context, this species should be kept in a minimum volume of 300 liters.

Fearful by nature, it is advised not to let the bluetail trunkfish cohabit with large territorial species or with too aggressive fish. It can easily evolve with territorial neighbors with a peaceful temperament or with non-territorial species.

Be careful to plan an adequate space for each territorial species. Each species should have a surface and a decor allowing it to juxtapose its territory with that of its neighbors.

Tips for feeding

The bluetail trunkfish is omnivorous with herbivorous tendency.

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

  • egg-laying protection
    No

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.

To go further

Species of the same family

To read on the web

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.

Benoit Chartrer

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.

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Template and content © Fishipedia - Unauthorized reproduction without prior request - ISSN 2270-7247 - Last modification 11/11/2023

Where to see this species?

Scientific partners

Species of the same family

Same genus

Species of the same biotope

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