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FishmediumFreshwater

Marbled Headstander

Abramites hypselonotus

📍 South America

The Marbled Headstander is a unique South American fish known for its distinctive head-down swimming posture and striking marbled pattern. These peaceful, schooling fish are moderately active and add interesting behavior and visual appeal to community aquariums. They require good water quality and prefer to be kept in small groups to display their natural social behavior.

Size3.5"
Min Tank30g
School4+
peaceful
Zonemiddle

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Care Guide

Diet

Marbled Headstanders are omnivorous and should be fed a varied diet including high-quality flake food, algae wafers, and small live foods such as daphnia and bloodworms. Feed small portions 2-3 times daily, adjusting quantity based on tank bioload. They will graze on algae and plant matter in the aquarium.

Behavior

These fish are named for their characteristic head-down posture while swimming and resting, which is completely normal behavior. They are schooling fish that display more natural behavior and reduced stress when kept in groups of at least 4-6 individuals. They are generally peaceful but may nip at very delicate plants and are most active during dawn and dusk hours.

Breeding

Breeding Marbled Headstanders in captivity is challenging and rarely accomplished in home aquariums. They are egg scatterers that require specific water conditions and plenty of fine-leaved plants or spawning mops. Successful breeding typically requires expert-level care and dedicated breeding tanks with careful conditioning of breeding pairs.

Common Diseases

Ich (Ichthyophthirius multifiliis)

Symptoms

White spots on body and fins, scratching against objects, labored breathing

Treatment

Increase temperature to 28-30°C (82-86°F), perform daily water changes, use ich medication containing malachite green or formalin; quarantine affected fish

Fin Rot

Symptoms

Frayed or deteriorating fins, discoloration at fin edges, lethargy

Treatment

Improve water quality with frequent water changes, reduce stocking density, use antibacterial medication; ensure proper nutrition and avoid aggressive tank mates

Bacterial Infection

Symptoms

Open sores, cloudy eyes, loss of appetite, color fading

Treatment

Perform large water changes, maintain excellent water quality, use broad-spectrum antibiotic medication; quarantine severely affected fish

Parasitic Infection

Symptoms

Excessive scratching, weight loss, visible parasites on gills, clamped fins

Treatment

Use anti-parasitic medication, increase aeration, perform frequent water changes; quarantine affected fish and treat entire tank if widespread

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Quick Facts

diet
omnivore - algae wafers, small live foods, vegetable matter
lifespan
5-8 years
max size
9 cm (3.5 in)
tank size
30 gallons minimum
temperament
peaceful

Water it likes

ph
6.0-7.5
ammonia
0 ppm
nitrate
<20 ppm
hardness
4-8 dGH
temperature
75–82°F (24–28°C)

Stats

Community tips0
Kept by0 hobbyists