Black Emperor Tetra

The a striking and elegant freshwater fish known for its deep dark body tones, iridescent highlights, and distinctive extended finnage in males. A slightly more assertive tetra species, s display fascinating social behaviour and are best kept in well-structured groups within spacious community aquariums.

When housed correctly, males develop intense coloration and graceful fin extensions, making this species a standout choice for planted aquariums and aquascapes. Physical Characteristics

Adult Size: Approximately 4–5 cm (1.5–2 inches)

Coloration: Dark charcoal to black body with subtle blue or purple iridescence; lighter underbelly

Body Shape: Slender, elongated tetra profile

Sexual Dimorphism:

Males develop longer dorsal and caudal fin extensions

Females are slightly larger and rounder with subtler colouration Behaviour & Temperament

Temperament: Semi-peaceful

Tank Level: Mid-water

Schooling Behaviour: Should be kept in groups of 6 or more

Activity Level: Males establish dominance hierarchies but rarely cause harm when properly grouped Suitable Tank Mates

Other medium-sized tetras

Rasboras

Corydoras catfish

Dwarf cichlids (peaceful species, Bolivian Rams)

Small gouramis

Catfish

Avoid:

Very small or timid fish

Aggressive or highly territorial species

Fin-nippers Breeding Information

Spawning Type: Egg scatterer

Breeding Setup:

Soft, slightly acidic water

Fine-leaved plants or spawning mops

Parental Care: None

Notes: Adults may eat eggs; removal is required for breeding attempts Special Considerations

Mild male aggression can occur in small groups

Best colour achieved with stable water quality and subdued lighting

Prefers planted aquariums with visual breaks

Avoid overcrowding to reduce stress Aquarium Requirements

Minimum Tank Size: 60-80 litres

Water Temperature: 22–28°C

pH Range: 5.5–7.5

Water Hardness: 2–10 dGH

Substrate: Sand or fine gravel

Decor: Live plants, driftwood, shaded areas

Filtration: Moderate, well-maintained

Lighting: Moderate; plants help diffuse brightness Diet & Feeding

Diet Type: Omnivore

Recommended Foods:

High-quality flakes or micro pellets

Frozen foods such as daphnia and brine shrimp

Occasional live foods for conditioning

Feeding Frequency: Once or twice daily in small portions

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