Rheoheros coeruleus

Scientific name Rheoheros coeruleus
Descriptor Stawikowski & Werner
Year of description 1987
IUCN category (World) DD
Family Cichlidae
Genus Rheoheros
Rheoheros coeruleus Rheoheros coeruleus

Introduction

Rheoheros coeruleus is a fresh water fish from the Central America.

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Who is it?

Morphology

  • Average size
    10 cm
  • Maximum size
    12 cm
  • Longevity
    5 year
  • Average size
    10 cm
  • Maximum size
    12 cm
  • Longevity
    5 year

How to recognize Rheoheros coeruleus ?

Rheoheros coeruleus measures between 10 and 12 cm.

Behaviour & Life cycle

  • diet
    carnivorous
  • Sociability
    living in small groups
  • territorial
    Yes
  • Way of living
    diurnal

Rheoheros coeruleus is a fish living in small groups naturally found at mid-depth and near the bottom. The members of each group are organized around a well established hierarchy. This species is carnivorous . Naturally, it tends to dig into the sand and transform its environment.

Although slightly territorial, Rheoheros coeruleus is a rather peaceful animal that generally behaves in a peaceful manner with other species. Parades or even small jousts may occur between different members of the group until a hierarchy is established.

Reproduction

  • Reproduction
    ovipare qui pond sur substrat caché

Rheoheros coeruleus is a fish ovipare qui pond sur substrat caché.

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 : DD

What is its habitat?

Natural environment characteristics

  • Temperature
    23 - 28 °C
  • pH (acidity)
    7.3 - 8
  • gh (hardness)
    10 - 25
  • Flow
    Strong

Biotope presentation

Rheoheros coeruleus prefers well oxygenated waters in current areas and rapids. It frequents fast flowing waters where the bottom is strewn with pebbles, wood or leaves carried by the current. It can be found not far from waterfalls .

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
    not specified
  • Temperature
    23 - 28 °C
  • pH (acidity)
    7.3 - 8

Characteristics

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

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 Rheoheros coeruleus

Rheoheros coeruleus is a species which lives naturally at a temperature between 23 °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.

Rheoheros coeruleus 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.

This species is generally available in specialized shops or from aquarium clubs. Specimens that have been bred for a long time are easier to breed, but special water parameters must be respected.

Builder fish

This fish has the particularity to dig its territory in the sand. Therefore, it is likely to uproot plants and modify the decor of the aquarium.

Cohabitation & Environment

Being a living in small groups fish, it is advisable to install at least 0 individuals in an aquarium of 300 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.

Fearful by nature, it is advised not to let Rheoheros coeruleus 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.

As previously said, Rheoheros coeruleus 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.

Basic water maintenance

Rheoheros coeruleus naturally living in basic water, the presence of limestone rocks such as millstone or travertine will improve its environment. It is also advisable to add sand with a contribution of specific salts to stabilize the pH, to be gauged according to the hardness of the water used.

Tips for feeding

Rheoheros coeruleus is carnivorous.

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.

Food recommendations from our partner JBL - Products PRONOVO

Reproduction protocol

  • Maintenance difficulty
    moderate
  • egg-laying protection
    Yes

Reproduction of this species in an aquarium is considered moderate. Ideally, it takes place at a temperature of around 25 ° C for a pH of 7.5 .

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.

Robert Allgayer

Robert Allgayer

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.

In collaboration with : Fédération Française Aquariophilie

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