Fishes 60 History 57 Agriculture 36 Fisheries 36 Environmental aspects 29 Fish culture 24 Striped bass 20 更多 ... Conservation of natural resources 17 Forests and forestry 17 Larvae 17 Power-plants 17 Eggs 15 Landscape gardening 14 Behavior 13 Gardens 13 Agricultural ecology 12 Control 11 Fish populations 10 Hunting 10 Dogs 9 Ecology 9 Forest conservation 9 Sustainable agriculture 9 Diseases 8 Fish tagging 8 Fishery management 8 Insect pests 8 National parks and reserves 8 Trees 8 Whaling 8 少 ...