The Figure Eight Puffer (Dichotomyctere ocellatus) is one of the most recognizable pufferfish in the aquarium hobby, instantly identifiable by the vivid black-and-yellow figure-eight markings adorning its dorsal surface. Native to the coastal and estuarine regions of Southeast and South Asia, this species thrives in brackish conditions, though it can adapt to a range of salinities. Reaching up to 8 cm in length, it is compact yet full of personality — widely regarded as one of the most interactive and expressive fish an aquarist can keep.
Its body is rounded and scaleless, with the characteristic ability to inflate when threatened. The eyes are highly mobile and give the fish a remarkably alert appearance. Males tend to display more vivid coloration than females, and both sexes will investigate their surroundings with apparent curiosity.
In the aquarium, the Figure Eight Puffer is best housed alone or with robust, fast-moving tank mates that can tolerate its nippy nature. It is an obligate carnivore that requires hard-shelled foods such as snails, clams, and crustaceans to naturally wear down its ever-growing beak. Without appropriate diet, dental overgrowth can become a serious health issue requiring intervention.
This species is not recommended for community tanks due to its aggressive and territorial tendencies. It thrives best in a well-decorated brackish aquarium with plenty of hiding places, visual barriers, and enrichment to satisfy its inquisitive nature. Given proper care, the Figure Eight Puffer becomes a deeply engaging centerpiece fish with a lifespan of up to 10 years.
