Nowadays, the Asuriní hunt with rifles and during the night, since they say that they no longer find animals during the day. They face considerable difficulties in acquiring the rifles, ammunition and batteries required for their torches and have consequently become dependent on FUNAI which only sporadically provides them with an inadequate supply of these materials. On many occasions, the Indians have no meat to eat.

Fishing, which could balance their diet, also appears to be affected by the ecological changes taking place across the whole region. Even so, its importance as a food source for the group is today much greater than during the period prior to contact. Fishing is practised by adult men, as well as less frequently by women and children. They fish with hooks, beaters and fishing nets in the Trocará river and the lakes close to the Tocantins, but rarely in the latter river.

During the months of July and August, until the water level reaches its lowest point, fishing in the lakes close to the village is fairly difficult and only improves at the end of September. During this period, fishing is only worthwhile in the rivers further away from the village: this involves the relocation of the entire nuclear or extensive family, which spends several days camped at some point far from the Indigenous Territory, where they can also find game more easily. It is on these occasions, say the Asuriní, that they eat well and become fatter.

In the months from January to April (the rainy season), the Asuriní gather products such as assai, bacury and Brazil nuts. This is a male activity, though sometimes women help. These products are destined for their own consumption and for sale in Tucuruí; only Brazil nuts, whose production is still at an early stage, are not sold.