Dog Face Puffer

Arothron nigropunctatus

Animalia›Chordata›Actinopterygii›Tetraodontiformes›Tetraodontidae

📍 Indo-Pacific

Charismatic puffer with a goofy, dog-like face and endearing personality. Recognises its keeper and becomes incredibly tame. Comes in grey-blue or golden-yellow forms. Not reef-safe — will bite corals and invertebrates.

Size13"

Min Tank100g

semi-aggressive

Zonemid

Care Guide

Diet

Dog Face Puffers are carnivorous and require hard-shelled prey to naturally wear down their continuously growing teeth. Feed a varied diet of frozen or live shrimp, clams, mussels, snails, and crab once daily. Supplement with quality carnivore pellets formulated for puffers, and occasionally offer live gastropods to encourage natural foraging behavior.

Behavior

Highly intelligent and personable, Dog Face Puffers quickly recognize their keepers and become remarkably tame, often begging for food at the glass. They are semi-aggressive and territorial, spending most time in mid-water zones exploring and investigating their environment with curious, playful movements. They may nip at tank mates and will consume any invertebrates or soft corals in the tank.

Breeding

Breeding Dog Face Puffers in captivity is extremely rare and poorly documented. They require very large tanks, specific environmental triggers, and pair compatibility is difficult to achieve. Home aquarists should not expect successful spawning; this species is best kept for its personality rather than reproductive purposes.

Tank Mates

Ocellaris Clownfish

Similar saltwater requirements; fast enough to avoid nipping, though caution advised with smaller individuals

good

Neon Goby

May be nipped at; only suitable in larger tanks with plenty of hiding spaces

caution

Yellow Watchman Goby

Stays near substrate and burrow; less likely to trigger aggressive behavior

good

Cleaner Shrimp

Will likely be eaten; only consider in very large tanks with multiple hiding spots

caution

Lawnmower Blenny

Algae grazer that occupies different niche; relatively safe from predation due to size and speed

good

Common Diseases

Ich (Marine White Spot Disease)

Symptoms

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

Treatment

Raise temperature gradually to 28-29°C, maintain excellent water quality, use copper-based treatments or hyposalinity therapy; quarantine affected fish

Fin Rot

Symptoms

Frayed or deteriorating fin edges, discoloration at fin margins, progressive fin loss

Treatment

Perform frequent water changes, improve water quality, use antibiotic treatments if bacterial; ensure proper salinity and temperature stability

Pufferfish Toxicity (Self-Poisoning)

Symptoms

Sudden death, erratic behavior, loss of buoyancy control, gasping at surface

Treatment

Prevention is key—maintain excellent water quality and avoid stressors; no cure exists; provide hiding spaces and stable conditions to reduce stress

Dental Overgrowth

Symptoms

Difficulty eating, food dropping from mouth, visible tooth protrusion, weight loss

Treatment

Provide hard-shelled prey regularly (snails, clams, crustaceans) to naturally wear teeth; severe cases may require professional veterinary intervention