Description
Black Paradise Fish (Macropodus opercularis var.)
The Black Paradise Fish is a unique and striking color morph of the classic Paradise Fish, Macropodus opercularis. Unlike the traditional form with red and blue stripes, the Black Paradise Fish displays a dramatic dark, near-black body with subtle iridescent highlights, giving it a bold and mysterious look. With its elongated fins and labyrinth organ (allowing it to breathe air at the surface), this species is hardy, adaptable, and full of personality.
Native to Asia, Paradise Fish are known for their resilience and ability to thrive in a wide range of conditions, even in unheated aquariums. While generally hardy, males can be territorial and aggressive, especially toward each other and other long-finned fish, so tank mate selection is important. With the right setup, they make a fascinating centerpiece species for aquarists seeking something different from the usual gouramis or bettas.
Quick Facts:
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Scientific Name: Macropodus opercularis (Black morph)
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Common Name: Black Paradise Fish
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Origin: Captive-bred morph (wild type native to East Asia)
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Max Size: ~4 inches
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Temperament: Semi-aggressive; males territorial
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Diet: Omnivorous – flakes, pellets, live/frozen foods (bloodworms, brine shrimp, daphnia)
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Tank Size: 20+ gallons (larger if housing multiple)
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Water Parameters:
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Temperature: 20–26°C (68–79°F) – can tolerate cooler water
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pH: 6.0–8.0
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Hardness: Soft to moderate (5–15 dGH)
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Experience Level: Beginner to intermediate
Why Choose the Black Paradise Fish?
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Rare and dramatic color morph with bold dark tones
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Hardy and adaptable – tolerates a wide range of water conditions
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Active and full of personality, similar to bettas and gouramis
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A unique centerpiece for medium-sized aquariums
