German Black Ram (Mikrogeophagus ramirezi) 2.5-3cm (Aquarium Glaser)

German Black Ram, a variant of the Mikrogeophagus ramirezi, is a stunning and relatively new addition to the world of freshwater aquarium fish. Here's a comprehensive overview of its characteristics, care requirements, and ideal habitat:

Overview

• Scientific Name: Mikrogeophagus ramirezi 'Black'
• Common Names: German Black Ram, Dark Knight Ram
• Size: Typically 2–3 inches (5–7.5 cm)
• Lifespan: 2–4 years
• Temperament: Peaceful, though males may show territorial behavior
• Origin: Line-bred variant, not found in the wild; developed through selective breeding

Appearance

• Deep, velvety black body with iridescent blue highlights
• Males are usually larger with more elongated dorsal fins
• Females may show a pinkish belly, especially during breeding

Tank Setup

• Tank Size: Minimum 20 gallons for a pair; larger if in a community
• Substrate: Fine sand or smooth gravel
• Decor: Driftwood, rocks, and live plants like Java fern or moss for hiding spots
• Lighting: Moderate to low to enhance coloration and reduce stress

💧 Water Parameters

• Temperature: 78–85°F (25–29°C)
• pH: 5.5–7.5 (slightly acidic to neutral)
• Hardness: 3–10 dGH
• Ammonia/Nitrite: 0 ppm
• Nitrate: <30 ppm
• Note: Sensitive to water quality—frequent partial water changes are essential [1]

🍽️ Diet

• Type: Omnivore and micropredator
• Staples: High-quality cichlid pellets or flakes
• Supplements: Frozen or live foods like brine shrimp, bloodworms, daphnia
• Vegetables: Occasional blanched spinach or zucchini
• Feeding Frequency: 2–3 times daily in small portions 

Breeding

• Behavior: Form monogamous pairs; males may court females with displays
• Spawning: Lay 100–300 eggs on flat surfaces
• Parental Care: Both parents guard and fan the eggs
• Fry Care: Feed infusoria or liquid fry food once free-swimming 

Tank Mates

• Compatible: Peaceful species like tetras, rasboras, Corydoras, Otocinclus
• Avoid: Aggressive or fin-nipping fish