Congo Puffer

Tetraodon miurus

Animalia›Chordata›Actinopterygii

📍 West Africa

An ambush predator from the Congo River basin with an impressive ability to camouflage itself by burying in substrate, displaying mottled brown-and-yellow patterning. It is highly aggressive and predatory — a true species-only or carefully managed predator tank fish — reaching up to 6 inches and requiring meaty foods like worms and crustaceans.

Size6"

Min Tank30g

aggressive

Zonebottom

Care Guide

Diet

Congo Puffers are strict carnivores requiring meaty foods exclusively. Feed live or frozen bloodworms, brine shrimp, small crustaceans, and snails 2-3 times weekly. Avoid fish-based foods as they may cause digestive issues; focus on invertebrates that mimic their natural diet of small crustaceans and mollusks.

Behavior

A solitary, cryptic ambush predator that spends much time buried in substrate with only its eyes visible, waiting for prey. Highly territorial and aggressive toward any tank mates; will attack and consume smaller fish and invertebrates. Nocturnal and relatively inactive during daylight, becoming more active at dusk.

Breeding

Breeding in captivity is extremely rare and poorly documented. No established breeding protocols exist for this species in the aquarium hobby. Attempting to breed them is not recommended for most hobbyists due to their aggressive nature and unknown reproductive requirements.

Tank Mates

Striped Raphael Catfish

Similar size and bottom-dwelling habits; may coexist if tank is large enough, but predation risk remains high

caution

Upside-Down Catfish

Nocturnal bottom-dweller with similar size; territorial conflicts likely but may tolerate each other in spacious tanks

caution

Fire Eel

Large, predatory, and similarly aggressive; only viable with substantial tank space and careful monitoring

caution

Rope Fish

Bottom-dwelling predator of similar temperament; cohabitation possible only in very large, well-structured tanks

caution

Common Diseases

Ich (Ichthyophthirius multifiliis)

Symptoms

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

Treatment

Raise temperature gradually to 28-30°C, perform 25% water changes daily, use aquarium salt (1 tsp 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 optimal temperature (75-82°C), use antibiotic medication if severe; remove any sharp decorations

Bacterial Infection

Symptoms

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

Treatment

Perform 50% water change immediately, maintain pristine water conditions, use broad-spectrum antibiotic medication; isolate if possible to prevent spread

Parasitic Infection

Symptoms

Excessive scratching against substrate, visible parasites, weight loss, lethargy

Treatment

Use anti-parasitic medication appropriate for puffers, increase water changes, maintain stable temperature; consult species-specific guidance as puffers are sensitive to some treatments