Their diet consists mostly of algae, mollusks, invertebrates and sometimes crustaceans. All fishes in the pufferfish family have strong teeth that may grow too long if the fish cannot consume abrasive food. Fugu can bite if provoked. Not all "Takifugu" have been studied in detail, but the most researched species is "Takifugu rubripes", due to the commercial farming of this fish for human consumption. "Takifugu rubripes", for example, breeds from March to May and lays eggs attached to rocks at a depth of around . As far as known, most species live exclusively in marine and brackish water, also breeding in this habitat. The anadromous "Takifugu obscurus" migrates from its coastal marine habitat into fresh water to spawn. An even more exceptional and unique breeding behavior is displayed by "Takifugu niphobles". They gather in groups at certain beaches, throw themselves onto land where fertilization happens and then return to the water. The eggs either float back into the water or may stay on land under rocks for a period, only hatching when again submerged by high tide. This breeding behavior is unique among pufferfish, but found in a few other unrelated fish like capelin and grunion.