The researchers studied the potential for fishing clupeid fish in Lake Kainji, Nigeria. They found that the lake has enough food for the fish to sustain a yearly production of 1,400 tons, which is worth N198,800 (£99,400). They recommended effective fishing methods to maintain the fishery and concluded that one type of clupeid fish, Pellonula afzeluisi, can be harvested on a large scale without harming the lake's ecosystem.