Following are the favourable conditions for fishing:
1. Shallow area of coast: Till 100 fathom (600 feet) shallow area of sea is favourable for fishing. Till this depth sunlight can easily enter. Thus, growth and development of fish takes place. Plankton and lichen are abundantly available on shallow sea coasts. So, fish come here in large numbers in order to eat them and lay eggs.
2. Availability of plankton in sufficient quantity: Sufficient food elements are found on sea shore area for plankton. So planktons are found in large quantity in sea shore areas. So, for eating planktons and decayed material, fish come here. Fish lay eggs in planktons.
3. Meeting of cold and hot stream: Where cold and hot stream meet each other also becomes a favourable condition for fishing. Planktons grow and develop in regions where hot and cold currents meet, so fish get gather in large amounts here to obtain food.
