Black Shark
The , also known as the minnow, is a large, powerful freshwater fish recognised for its deep black coloration and shark-like body shape. Juveniles are often sold small but grow into imposing adults that require significant space and careful tank planning.
Physical Characteristics:
Adult Size: 60–90 cm (can exceed this in very large systems)
Body Shape: Long, muscular, shark-like profile
Colouration: Solid jet black body and fins
Sexual Dimorphism: Minimal; difficult to distinguish
Lifespan: 10–15 years
Behaviour & Temperament:
Temperament: Aggressive
Swimming Level: Bottom to mid levels
Territorial Behaviour: Extremely strong
Social Behaviour: Must be kept singly
s will aggressively defend territory and will attack or harass most tank mates if space is insufficient.
Aquarium Requirements:
Minimum Tank Size: 400 litres (adult requirement)
Juvenile Holding Tank: Short-term only
Water Temperature: 22–28°C
pH Range: 6.0–7.5
Water Hardness: 5–15 dGH
Water Flow: Moderate to strong
Substrate: Sand or smooth gravel
Aquascape: Large rocks, driftwood, caves, open swimming zones
Tank Cover: Essential
Feeding:
s are omnivorous with a strong appetite:
Large sinking pellets
Algae wafers
Blanched vegetables (zucchini, spinach, peas)
Frozen foods (prawns, mussels, bloodworms)
Feed once daily. Avoid overfeeding due to rapid growth and waste production.
Compatibility:
Suitable Tank Mates:
Large cichlids
Arowanas
Giant gouramis
Large catfish
Avoid Housing With:
Community fish
Other sharks or loaches
Bottom dwellers
Slow or timid species
Breeding:
Breeding in Captivity: Not achieved
Commercial Breeding: Not established
Notes: Not a home-breeding species
Special Considerations:
Grows extremely large
Not suitable for standard home aquariums
Aggression increases with age
Long-term commitment required
Best suited to public aquaria or very large private systems
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