The fishing baits and whether we are allow to fish at jurong lake park

This two pictures shows that fishing is only allow when we are on jetties and are not using live baits to fish as this maight decrease the populations of fishes in the lake.The first picture shows that fishing is not allow in the park ,however, the second picture shows that fishing is allow!this is sort of strange,they don't allow us to fish in the park but allow us to fish on jetties...