Fishes 56 History 54 Fisheries 35 Agriculture 33 Environmental aspects 25 Fish culture 24 Striped bass 20 more ... Conservation of natural resources 17 Forests and forestry 17 Larvae 17 Power-plants 17 Eggs 15 Landscape gardening 14 Gardens 13 Behavior 12 Agricultural ecology 11 Control 11 Fish populations 10 Hunting 10 Dogs 9 Forest conservation 9 Diseases 8 Ecology 8 Fish tagging 8 Fishery management 8 Insect pests 8 National parks and reserves 8 Trees 8 Fishery resources 7 Hudson River (N.Y. and N.J.) 7 less ...