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spot-fin porcupinefish

Scientific name Diodon hystrix
Descriptor Linnaeus
Year of description 1758
IUCN category (World) LC
Family Diodontidae
Genus Diodon
Diodon hystrix Diodon hystrix
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Introduction

Diodon hystrix, commonly known as spot-fin porcupinefish, is a salt water fish.

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Who is it?

Morphology

  • Type
    pufferfish
  • Average size
    50 cm
  • Maximum size
    90 cm
  • Shape
    Balloon and near
  • Pattern
    circle pattern
  • Type
    pufferfish
  • Average size
    50 cm
  • Maximum size
    90 cm
  • Shape
    Balloon and near
  • Pattern
    circle pattern

How to recognize the spot-fin porcupinefish ?

This species belongs to the group of pufferfish. These fish are nicknamed like this because they have the ability to inflate themselves when they feel threatened.

To achieve this inflation, they swallow water and fill their stomach to more than double their volume. This is made possible by their stretchy skin. This subterfuge makes them look much more impressive to their predators. They are also much more complicated to swallow. This change in shape becomes a disadvantage for these fish that, once inflated, can hardly move.

The spot-fin porcupinefish measures between 50 and 90 cm. This fish is bicolore with a predominantly blanc and beige body. The has the particularity to be covered with prickles. The also has marron circle pattern.

Behaviour & Life cycle

  • diet
    omnivorous with carnivorous tendency
  • Sociability
    solitary
  • territorial
    No
  • Way of living
    nocturnal

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 spot-fin porcupinefish is a fish solitary naturally found in the vegetation. This species is omnivorous with carnivorous tendency . This fish lives mainly at night. Usually, it leaves its hiding place and starts to be active once it gets dark.

n general, this species does not care much about other animals crossing its path.

Reproduction

  • Reproduction
    ovipare qui pond sur substrat découvert

The spot-fin porcupinefish is a fish ovipare qui pond sur substrat découvert.

Harmless species

This species does not represent any particular threats to humans when encountered in its natural environment.

Where to find it?

Conservation status of populations (IUCN)

World : LC
France : LC

Where to see this species?

Aquarium des Lagons

What is its habitat?

Natural environment characteristics

  • Temperature
    25 - 30 °C
  • Depth
    3 - 20 m
  • Flow
    Medium and Slow

Biotope presentation

The spot-fin porcupinefish is most often found at a depth between 3m and 20m. 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
    3000 liters
  • Population min
    1
  • Temperature
    25 - 30 °C
  • pH (acidity)
    8.2 - 8.4

Characteristics

  • Difficulty breeding
    moderate
  • Robustness
    tolerant
  • Behaviour
    peaceful

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 spot-fin porcupinefish

The spot-fin porcupinefish is a marine species which lives naturally at a temperature between 25 °C and 30 °C. For proper maintenance, the temperature should never exceed the 33°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 breeding of this species is accessible on condition of being well informed about its needs in aquarium . Any cohabitants must be chosen with care to avoid the loss of animals.

Formal incompatibilities

Be careful, the spot-fin porcupinefish is incompatible with molluscs, crustacean and corals.

Cohabitation & Environment

In a community aquarium context, this species should be kept in a minimum volume of 3000 liters.

The spot-fin porcupinefish is a peaceful species that generally does not exhibit behavioral problems in a community aquarium.

Tips for feeding

The spot-fin porcupinefish is omnivorous with carnivorous 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
    Yes

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.

These animals might interest you

To go further

To read on the web

BioObs fishbase EOL

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

Patrick Chartrer

Patrick 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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