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FishintermediateFreshwater

Clown Loach

Chromobotia macracanthus

AnimaliaChordataActinopterygiiBotiidae

📍 Sumatra & Borneo, Indonesia

Ask Finn

Clown loaches are sociable, active fish with bold orange and black banding. They grow large over time and need spacious tanks with plenty of hiding spots. They are excellent snail hunters and enjoy digging in soft substrate.

Size12"
Min Tank75g
School5+
peaceful
Zonebottom

Care Guide

Diet

Clown loaches are omnivores that require a varied diet of sinking pellets, frozen bloodworms, and occasional live snails to satisfy their natural foraging behavior. Feed high-quality sinking pellets as a staple 5-6 days per week, supplemented with blanched vegetables like zucchini and cucumber 2-3 times weekly. They are excellent snail hunters and will actively consume pest snails, making them valuable for biocontrol in planted tanks.

Behavior

Clown loaches are highly social and active fish that must be kept in groups of at least 5 individuals to prevent stress and aggression. They are bottom-dwellers that spend much of their time digging, sifting, and exploring the substrate, and they often hide in caves or dense vegetation during the day. They are peaceful with other fish but may harass smaller shrimp or snails; they are most active during dawn and dusk.

Breeding

Breeding clown loaches in captivity is extremely difficult and rarely successful in home aquariums. They require specific environmental triggers (seasonal temperature changes, water chemistry shifts) and large spawning spaces that are difficult to replicate. Most clown loaches in the hobby are wild-caught or commercially bred in specialized facilities.

Common Diseases

Ich (Ichthyophthirius multifiliis)

Symptoms

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

Treatment

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

Fin Rot

Symptoms

Frayed or deteriorating fins, discoloration at fin edges, lethargy, loss of appetite

Treatment

Improve water quality with frequent partial water changes, maintain optimal temperature and pH, use antibacterial medication if severe; remove sharp decorations

Bacterial Infection

Symptoms

Open sores, red streaks on body, swollen areas, cloudy eyes, loss of appetite

Treatment

Perform 50% water change immediately, maintain pristine water conditions, use broad-spectrum antibiotic medication; isolate severely affected fish if possible

Parasitic Infection (Flukes/Worms)

Symptoms

Excessive scratching on substrate and objects, clamped fins, visible parasites, weight loss despite feeding

Treatment

Use anti-parasitic medication designed for loaches, perform frequent water changes, quarantine new fish before adding to main tank

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Quick Facts

diet
Omnivore – sinking pellets, snails, bloodworms, vegetables
lifespan
10–20+ years
max size
30 cm (12 in)
tank size
75 gallons minimum (adults)
temperament
Peaceful, social; keep in groups of 5+

Water it likes

ph
6.0–7.5
ammonia
0 ppm
nitrate
<20 ppm
hardness
5–12 dGH
temperature
77–86°F (25–30°C)

Stats

Community tips0
Kept by0 hobbyists