Description
Marble Hatchetfish (Carnegiella strigata)
π Basic Info
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Scientific Name: Carnegiella strigata
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Common Names: Marble Hatchetfish, Marbled Hatchetfish
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Family: Gasteropelecidae (Freshwater Hatchetfish Family)
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Order: Characiformes
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Origin: Amazon Basin β Found in Peru, Brazil, and Colombia in slow-moving forest streams and tributaries.
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Size: Up to 4.5 cm (1.8 inches)
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Lifespan: 3 β 5 years
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Tank Zone: Surface dweller
π Water Parameters
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Temperature: 24 β 28Β°C (75 β 82Β°F)
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pH: 5.5 β 7.0
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Hardness: 2 β 12 dGH
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TDS: 80 β 200 ppm
π Characteristics
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Body Shape: Distinctive hatchet-shaped body with a deep chest and flat back.
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Coloration: Silvery body marbled with dark brown or black streaks, resembling natural stone patterns.
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Fins: Small pectoral fins adapted for short gliding jumps above the water.
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Behavior: Peaceful, shy, and prefers to stay near the water surface under floating plants.
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Special Feature: Known for their ability to leap out of the water when startled β a tight-fitting lid is essential.
π½οΈ Diet
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Type: Carnivorous
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Diet: Live or frozen foods such as mosquito larvae, fruit flies, brine shrimp, and finely crushed flakes.
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Feeding Frequency: 2 times daily with small portions.
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Tip: Provide floating foods to match their surface-feeding habit.
π οΈ Maintenance
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Tank Size: Minimum 60 liters (15 gallons) for a small group.
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Filtration: Gentle filtration with low surface turbulence.
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Substrate: Dark sand or fine gravel to mimic natural habitat.
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Decor: Floating plants, driftwood, and dim lighting for comfort.
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Water Change: 25β30% weekly to maintain pristine water quality.
π₯ Social Behavior
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Group Size: Schooling fish β keep in groups of at least 6 or more.
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Tank Mates: Peaceful species like Neon Tetras, Corydoras, Pencilfish, and small Rasboras.
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Avoid: Large or boisterous fish that may frighten them.
β
Doβs
β’ Provide floating plants for cover.
β’ Keep a tightly covered aquarium to prevent jumping.
β’ Maintain soft, slightly acidic water.
β Donβts
β’ Avoid sudden movements or loud vibrations near the tank.
β’ Donβt keep singly β they stress easily without a group.
β Quick Tip:
The Marble Hatchetfish is a unique surface dweller that brings both beauty and fascination to any peaceful community aquarium. Its marbled body pattern and gliding behavior make it a true gem for nature-style or Amazon biotope tanks.



