1. Ichthyology: –The Study of Fishes 2. Modification of Morphological parts 3. Classification of Fishes 4. Respiration in Fishes 5. Food, Feeding, Digestion and Nutrition in Fishes 6. Food Chain and Trophic Levels 7. Fish Food Organisms: Planktons 8. Reproduction in Fishes 9. Age & Growth in Fishes 10. Growth in Fishes 11. Biology of Catla 12. Biology of Rohu 13. Biology of Mrigal 14 Biology of Common–carp 15. Biology of Silver–carp 16. Biology of Grass–carp 17. Biology of Hilsa 18. Biology of Grey–Mullet 19. Fisheries of Lakes and Reservoirs 20. Limnology of Lakes and Reservoirs 21. Pre–Impoundment Survey of Reservoirs 22. Post–impoundment Management of Reservoir Fishery 23. Problems Pertaining to Indian Reservoirs 24. Exploitation Methods Adopted in Indian Reservoirs 25. Indices of Productivity of Reservoirs 26. Limnology of Rivers and Streams 27. Riverine Fisheries Resources of India 28. Fisheries of Different River Systems 29. Migration of Fishes 30. Migration of Fishes in Indian Waters 31. Dams & Weirs – Obstacles for Fish Migration 32. Fish Passage/ Fish Ways/ Fish Passes 33. Tagging/ Marking of Fishes 34. Riverine Pollution 35. Estuarine Fisheries 36. The Estuaries 37. Fisheries of Important Estuaries of India  38. Fisheries of Lagoons & Back–waters 39. Oceanography 40. Some Major Features of the Earth and the Oceans 41. The relation between the Ocean and the Land 42. Topographic features of the Ocean floor 43. Distribution of Salinity in the Ocean 44. General Distribution of Temperature in the Ocean 45. General Distribution of Density in the World Ocean 46. Water–Mass & its Characteristics 47. Up–Welling 48. General Ocean Currents 49. Current Systems of the World Ocean 50. The Waves 51. The Tides 52. Physiography of the Indian Ocean 53. Chemical Oceanography 54. Fisheries oceanography of the Arabian Sea 55. Fisheries Oceanography of the Bay of Bengal 56. Meteorology 57. Prelude to Fishery Biology 58. Planktons 59. Bacterio–plankton 60. Phytoplankton 61. Diatoms/ Diatomaceae/ Bacillariophyceae 62. Distribution of Phytoplanktons in Indian ocean 63. The Zooplanktons 64. Distribution of Zooplanktons in Indian Ocean 65. Vertical Migration of Zooplankton 66. Indicator Species 67. Benthos – The Organisms of the Sea–bottom 68. Sea–weeds Resources of India 69. Organic Production in the Ocean 70. The Organic Production in the Indian Ocean 71. Marine Pollution 72. Sardine Fishery of India 73. Mackerel Fishery of India 74. Tuna and Allied Fishery of India 75. Bombay–duck Fishery of India 76. Pomprates Fishery of India 77. Silver–belly Fishery of India 78. Elasmobranch Fishery of India 79. Sciaenids Fishery of India 80. Polynemids Fishery of India 81. Sole Fishery of India 82. Marine Cat–fish Fishery of India 83. Crustacean Fishery of India 84. Molluskan Fishery of India 85. Fisheries Management 86. Study of Age and Growth of Fishes 87. Age Determination by Growth–Checks on Hard–parts 88. Fish Length from Growth–Rings 89. Growth Characteristics of Fish 90. Sampling for Resources Estimation 91. Estimation of Mortality and Exploitation–Rates 92. Estimation of Stock, Recruitment and Yield per Recruit 93. Fitting Yield Models