Reticulated Pufferfish Identification Guide
Recognize a reticulated pufferfish by the maze-like network of pale lines over its dark, sharply bicolored body.
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Key identification features
- Dark brown to blackish back marked with a network of thin, pale connected lines forming a maze- or map-like (reticulated) pattern
- Sharp contrast between the patterned back and a plain, pale to white belly
- Dark spots or blotches scattered on the dorsal, anal, and caudal fins
- Rounded head with a short snout and small, high-set eyes
- Smooth, scaleless skin that inflates when threatened
- Moderate to large size, reaching around 20 inches (50 cm)
- Broad, flattened head profile compared to the more rounded head of many other Arothron puffers
Common look-alikes
- Guineafowl puffer (Arothron meleagris), dark morph: shows separate small round white spots rather than connected reticulated lines.
- Star puffer: covered in uniform round spots instead of a maze-like line network.
- Milk-spotted puffer: has larger, more widely spaced pale blotches rather than fine connected netting.
Where you'll see one
Reticulated pufferfish are found across the Indo-Pacific, favoring muddy or turbid coastal waters, harbors, and estuary mouths, where they forage slowly over soft bottoms near mangroves and river outflows.
Frequently asked questions
How do I tell a reticulated pufferfish from a guineafowl puffer?
Look closely at the pattern: the reticulated pufferfish's pale lines connect into a maze-like network, while the guineafowl puffer shows separate round white spots.
What habitat clue points to a reticulated pufferfish?
It favors murky estuarine and coastal waters near mangroves, rather than the clearer open reef habitat typical of many other Arothron species.