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Mikrogeophagus ramirezi — German Blue Ram

German Blue Ram

Mikrogeophagus ramirezi

German Blue Ram (Mikrogeophagus ramirezi) is a freshwater species with an adult-size reference of about 7 cm. It needs at least 60 litres and 2 individuals, with its social and territorial profile taken into account.

Température de l’eau

27 - 30 °C

Valeur du pH

5.5 - 6.8

Type d'eau

Eau douce

Niveau dans le bac

Fond et milieu

Taille adulte

7 cm

Volume minimal du bac

>= 60 L

Groupe minimal

>= 2

GH

1 - 5 dGH

KH

0 - 4 dKH

TDS

15 - 115 ppm

Conductivité

23 - 180 uS/cm

Description de l'espèce

Geographical Origin and Habitat: A freshwater species; the enclosure should provide stability, oxygenation, space and shelter consistent with its behaviour without turning one habitat description into a mandatory recipe.
Taxonomy and Morphology: The accepted scientific name is Mikrogeophagus ramirezi; the verified classification records genus Mikrogeophagus, family Cichlidae, subfamily Cichlinae, order Cichliformes. Historical names remain searchable as synonyms rather than separate species.
Social Behavior: German Blue Ram should be kept as a compatible pair. The minimum reference is 2 individuals; sex, maturity and available space can require a more conservative composition. Observe access to food, resting behaviour, chasing and use of shelter. Isolation, persistent competition or aggression means the number, composition or environment needs to be corrected.
Coloration and Sexual Dimorphism: Colour and shape can vary with age, sex, physiological state and environmental conditions. Identification and sexing require recognized species-level characters; one appearance or photograph is not enough.

Soins, reproduction et cohabitation

Aquarium Setup: German Blue Ram needs an aquarium of at least 60 litres, sized for adult body size and a minimum group of 2 individuals. Filtration, shelter and swimming room must match the species and the actual number kept. Volume alone does not make an enclosure suitable: tank shape and length, usable area, oxygenation and the ability to separate territories must reflect adult behaviour.
Diet and Feeding: The recorded diet is omnivorous. Offer appropriately sized foods varied within that category, and adjust quantity and frequency from actual intake, body condition and leftovers. One food or a fixed schedule is not suitable for every age and situation.
Water Quality: Maintain stable, well-oxygenated water appropriate to a freshwater species; the card's reference values are 27–30 °C, pH 5.5–6.8. Verify conditions with reliable tests and size maintenance and filtration to the actual load. Ranges are not automatic thresholds for treatment or rapid chemical correction.
Compatibility and Cohabitation: The cohabitation profile is a species to combine with caution, with a generally territorial temperament. Keep at least 2 individuals; tankmates, stocking density and decor must allow escape, rest and feeding without excessive competition. Watch interactions especially during feeding, maturity and breeding. Persistent chasing, injury or exclusion from food requires a change in stocking or layout, or separation of the animals.
Aquarium Breeding: The recorded reproductive profile is “substrate spawning”. Breeding should be attempted only with healthy adults, separation capacity and a plan for eggs or young. Do not treat unverified triggers, sex ratios or hatch times as universal for this species.
Risks and Diseases: Prevent problems through quarantine of new arrivals, stable water, appropriate feeding and daily observation. Similar signs can have different causes, so check parameters, history and diagnosis before medication. Follow the product label and qualified aquatic-veterinary advice; there is no universal reduced dose for a species or family.

Origine et répartition géographiques

A freshwater species; the enclosure should provide stability, oxygenation, space and shelter consistent with its behaviour without turning one habitat description into a mandatory recipe.

Origine

Amazonie, Orénoque et Guyanes

Profil de poisson

Tempérament
Territorial
German Blue Ram has a generally territorial temperament. Insufficient space, an unsuitable social ratio or incompatible tankmates can substantially change observed behaviour.
Régime alimentaire
Omnivore
Rams are omnivorous micropredators that sift through the substrate for small invertebrates. Their diet should consist of high-quality sinking micro-pellets and a regular variety of frozen or live foods such as bloodworms and daphnia. Offering a varied diet is essential to maintain their brilliant coloration and overall health.
Espérance de vie
2-3 years
Taille adulte
7 cm
Ratio des sexes
Pair
German Blue Ram should be kept as a compatible pair. The reference minimum is 2 individuals and must not be read as permission to overcrowd the aquarium.
Fréquence d'alimentation
2-3 times daily
It is best to feed them small amounts two times a day, ensuring that the food reaches the bottom. Because they are deliberate eaters, they can be easily outcompeted by more aggressive top-feeding fish. Target feeding may be required to ensure they receive adequate nutrition in a busy community setup.
Charge biologique
Medium
The German Blue Ram produces a moderate bioload for its small size. However, they are exceptionally sensitive to poor water quality, making efficient and mature biological filtration critical. Strict adherence to regular water changes is necessary to keep nitrates and other dissolved organics extremely low.
Courant
Moderate
They prefer sluggish to moderate water movement, replicating the slow-moving pools and tributaries of the Orinoco river basin. Strong currents will force them to expend unnecessary energy and lead to chronic stress. Baffling the filter output to create a calm environment is highly recommended.
Risque de saut
No
Reproduction
Substrate spawner
They are substrate spawners that form monogamous pairs and provide bi-parental care. The female will lay her eggs on a flat, cleaned stone or occasionally in a shallow pit in the sand. Both parents will vigorously defend the eggs and the resulting free-swimming fry from potential predators.
Compatibilité et compagnons
With caution
The cohabitation profile is a species to combine with caution, with a generally territorial temperament. Keep at least 2 individuals; tankmates, stocking density and decor must allow escape, rest and feeding without excessive competition. Watch interactions especially during feeding, maturity and breeding. Persistent chasing, injury or exclusion from food requires a change in stocking or layout, or separation of the animals.
Niveau dans le bac
Middle/Bottom
German Blue Rams are predominantly bottom and lower-mid level dwellers. They spend a large portion of their time sifting through the substrate in search of food. Providing a soft, sandy substrate is crucial to prevent damage to their delicate gills during this sifting behavior.

Modèles et paramètres scientifiques

FishBase

Fenêtre sur les données scientifiques officielles de l’espèce

FishBase v25.04Données synchronisées le : 15/06/2026
Niveau trophique
3,1 ± 0,5 se
Résilience
Élevée (moins de 15 mois)
Singularité phylogénétique (PD50)
0.75
Relation bayésienne longueur-poids
a = 0.01445, b = 3.08
VulnérabilitéVulnérabilité faible (10 / 100)
German Blue Ram · Soins en aquarium | Atlarium