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Horsefaced Loach
Acantopsis dialuzona
Animalia›Chordata›Actinopterygii›Cobitidae
📍 Southeast Asia, Mekong to Sumatra
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.
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.
Tank Mates
Similar peaceful temperament and bottom-dwelling habits; both are algae/detritus feeders that won't compete aggressively
Small, peaceful mid-water swimmers that occupy different zones and prefer similar water parameters
Peaceful schooling fish that stay in mid-water column and share preference for soft, slightly acidic water
Peaceful and occupy different water zones; compatible water temperature and pH requirements
Generally compatible but loaches may occasionally hunt very small shrimp; larger shrimp colonies are safer
Common Diseases
Ich (Ichthyophthirius multifiliis)
White spots on body and fins, flashing against substrate, rapid breathing, lethargy
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
Frayed or deteriorating fins, discoloration at fin edges, lethargy
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
Open sores, cloudy eyes, loss of appetite, color fading, torn fins
Perform 30% water change immediately, treat with broad-spectrum antibiotic medication, isolate if possible, improve water quality and reduce stressors
Parasitic Infection
Excessive scratching against substrate, visible parasites, weight loss, clamped fins
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