Perhaps this picture shows in 1990 only one fishing boat, but in 1995, many fishing boats. Earlier, the picture or chart shows a lot of fish, but in 1995, only one fish left. This would suggest that as fishing becomes a more viable occupation, others rush to catch the fish so that their incomes will rise as does the woman in the first fishing boat. As more men and women join this woman in catching fish, and selling them at the fish markets, the limited pond can produce only so many fish, until only one fish remains.