threadfin cichlid
Scientific name | Petrochromis trewavasae |
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Descriptor | Poll |
Year of description | 1948 |
IUCN category (World) | LC |
Family | Cichlidae |
Genus | Petrochromis |
Introduction
Petrochromis trewavasae, commonly known as threadfin cichlid, is a fresh water fish from the Africa.
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Who is it?
Morphology
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Average size18 cm
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Maximum size20 cm
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Longevity10 year
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ShapeOvoid
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Average size18 cm
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Maximum size20 cm
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Longevity10 year
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ShapeOvoid
How to recognize the threadfin cichlid ?
The threadfin cichlid measures around 18 cm. The dominant males can however reach 20 cm.
Sexual dimorphism
The adult male is bigger than the female.
Behaviour & Life cycle
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dietherbivorous
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Sociabilityliving in small groups
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territorialYes
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Way of livingdiurnal
The threadfin cichlid is a fish living in small groups naturally found near the bottom. The members of each group are organized around a well established hierarchy. This species is herbivorous . Naturally, it tends to dig into the sand and transform its environment.
The threadfin cichlid 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 incubateur buccal
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PolygamyYes
The threadfin cichlid is a fish ovipare incubateur buccal. In this species, the dominant males are polygamous and reproduce each season with several females.
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)
What is its habitat?
Natural environment characteristics
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Temperature23 - 28 °C
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pH (acidity)7.8 - 8.8
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gh (hardness)15 - 25
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FlowSlow and Stagnant
Biotope presentation
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 volume1500 liters
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Population min3
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Temperature23 - 28 °C
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pH (acidity)7.8 - 8.8
Characteristics
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Difficulty breedinghard
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Robustnesstolerant
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Behaviourmoderately aggressive
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Availabilityoccasional
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 threadfin cichlid
The threadfin cichlid 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.
The threadfin cichlid 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.
Formal incompatibilities
Cohabitation & Environment
Being a living in small groups fish, it is advisable to install at least 3 individuals in an aquarium of 1500 liters minimum (for 200 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 threadfin cichlid 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.
This fish being polygamous, the male must always be maintained with several females. A ratio of three females to one male seems to be a good compromise for the constitution of the group.
To best reproduce the biotope of this species, you can cover the bottom of the tank with sand and put a pile of stones to form caves.
Be careful, this species does not appreciate plants and will end up destroying, uprooting or nibbling them. It will not be possible to make an aquarium planted in its presence.
Basic water maintenance
The threadfin cichlid 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
The threadfin cichlid is herbivorous.
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
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Granules
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Flakes
Reproduction protocol
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Maintenance difficultymoderate
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egg-laying protectionYes
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 8 .
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.
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