thorny catfish
| Scientific name | Oxydoras niger |
|---|---|
| Descriptor | Valenciennes |
| Year of description | 1821 |
| IUCN category (World) | LC |
| Family | Doradidae |
| Genus | Oxydoras |
Introduction
Oxydoras niger, commonly known as thorny catfish, is a fresh water fish from the Amérique du Sud.
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Who is it?
Morphology
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Average size59 cm
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Maximum size100 cm
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Average size59 cm
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Maximum size100 cm
How to recognize the thorny catfish ?
The thorny catfish measures between 59 and 100 cm. This fish is unicolore with a predominantly noir, marron and gris body.
Behaviour & Life cycle
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dietomnivorous
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Sociabilityliving in small groups
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territorialNo
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Way of livingdiurnal
The thorny catfish is a fish living in small groups naturally found on the bottom. This species is omnivorous .
Although the thorny catfish is non-territorial, it is sometimes aggressive towards other species.
Reproduction
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Reproductiondont le mode de reproduction est encore inconnu
The thorny catfish is a fish dont le mode de reproduction est encore inconnu.
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)
Where to see this species?
What is its habitat?
Natural environment characteristics
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Temperature24 - 30 °C
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pH (acidity)6 - 7.8
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FlowMedium, Slow and Stagnant
Biotope presentation
The thorny catfish is most often found at a depth between 0m and 25m. However, it is not impossible to find this species at other depths. This animal evolves in areas characterized by a strong presence of vegetation (aquatic and marsh plants, decaying organic matter, roots...).
This species lives near large roots, in which it can find refuge in case of danger. This type of habitat is often found not far from the banks.
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 volume4500 liters
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Population minnot specified
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Temperature24 - 30 °C
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pH (acidity)6 - 7.8
Characteristics
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Behaviourslightly aggressive
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.
In nature, animals are subject to weather conditions and live in waters with variable characteristics. The recommendations offered by our team for aquarium maintenance are a guidance and cannot be assimilated to scientific datas.
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 thorny catfish
The thorny catfish is a species which lives naturally at a temperature between 24 °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.
Cohabitation & Environment
Being a living in small groups fish, it is advisable to install at least 0 individuals in an aquarium of 4500 liters minimum. Group maintenance is a prerequisite to ensure their well-being. Lonely individuals tend to quickly become stressed and become especially susceptible to disease. Warning, mixing several species living in the same living area is not recommended if the volume is not significant.
The species enjoys a particularly vegetation-rich environment. The addition of plants will provide many useful hiding places for resting. These areas are also conducive to possible breeding in the aquarium.
Tips for feeding
The thorny catfish is omnivorous.
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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egg-laying protectionNo
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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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
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.
Where to see this species?
Scientific partners
Species of the same family