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FishbeginnerFreshwater

Horsefaced Loach

Acantopsis dialuzona

AnimaliaChordataActinopterygiiCobitidae

📍 Southeast Asia, Mekong to Sumatra

Ask Finn

Elongated loach with a distinctive long snout for sifting sand. Spends much of its time buried with just its eyes visible. Peaceful and an excellent sand-bed cleaner.

Size8"
Min Tank40g
School3+
peaceful
Zonebottom

Care Guide

Diet

Horsefaced loaches are omnivores that primarily feed on small invertebrates and organic debris found in the substrate. Offer a varied diet of sinking pellets, frozen bloodworms, and small crustaceans 2-3 times weekly. They will also consume algae wafers and vegetable matter, and benefit from occasional live foods like small shrimp or insect larvae to stimulate natural foraging behavior.

Behavior

These loaches are primarily nocturnal and spend much of their time buried in sand with only their eyes visible, using their elongated snout to sift through the substrate for food. They are peaceful and non-aggressive toward other fish, though they may be shy and reclusive during the day. They are most active during dawn, dusk, and nighttime hours, and should be kept in groups of at least 3 to reduce stress and encourage natural behavior.

Breeding

Breeding horsefaced loaches in captivity is extremely rare and poorly documented. They require very specific environmental conditions including soft, acidic water and seasonal temperature fluctuations to trigger spawning. Most specimens in the aquarium hobby are wild-caught, and successful captive breeding is not reliably achieved by hobbyists.

Common Diseases

Ich (Ichthyophthirius multifiliis)

Symptoms

White spots on body and fins, flashing against substrate, rapid breathing, lethargy

Treatment

Raise temperature gradually to 28-30°C, perform daily 25% water changes, use aquarium salt (1 teaspoon per 5 gallons) or ich-specific medication; treat for 10-14 days

Fin Rot

Symptoms

Frayed or deteriorating fins, discoloration at fin edges, lethargy

Treatment

Improve water quality with frequent partial water changes, maintain proper temperature, use antibacterial medication if severe; ensure good filtration and remove any sharp tank decorations

Bacterial Infection

Symptoms

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

Treatment

Perform 30% water change immediately, treat with broad-spectrum antibiotic medication, isolate if possible, improve water quality and reduce stressors

Parasitic Infection

Symptoms

Excessive scratching against substrate, visible parasites, weight loss, clamped fins

Treatment

Use anti-parasitic medication appropriate for loaches, perform frequent water changes, quarantine affected fish, maintain optimal water conditions to boost immune system

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Quick Facts

pH
6.0–7.5
diet
omnivore/invertebrates
maxSize
8 inches
minTankSize
30 gallons
temperature
75–82°F (24–28°C)

Temperature

75–82°F

24–28°C

Stats

Community tips0
Kept by0 hobbyists