Fresh Bhetki Cubes

Fish:
In India, the Fish Eating population is divided into two major section, Marine Fish eaters and Freshwater Fish Eaters. So many rivers originating from the Himalayas are the source of Freshwater Fishes like Catfish and Carp. Fish farm on large water bodies is also maintains regular supply of Freshwater Fish like Rohu and Katla etc.
Fishing ports dotted in all along the coastal line is the source of Marine Fish. Most favoured is the Sear Fish or Banjaran, Raous and Snappers come next. Other popular fish is Lates Calcarifera or Bhetki, that is favourite to both the groups. Hilsa (Tenualosa ilisha) is highly priced among Bengali community, usually a catch from the upstream is the most sought after (Hilsa comes from the sea and swim into a river and travels upstream for breeding). Bombil or Bombayduck (Harpadon nehereus) is a hot favourite in Western Coast.
Purchase of Fish depends on three factors

Availability
Proximity to Fishing Port always guarantee the best supply. It also provides the opportunity to buy in a bargain price, where as landlocked places usually offer a higher fixed price
Freshness
Again, proximity to a Fishing Harbour ensures the freshest supply, a visit to the local fish market is the place to source latest catch. Distant places usually sells frozen and processed fish
Percentage of Wastage
Wastage is less in processed purchase, so if you prefer fresh supply you have to bear the cost of wastage.
Buying tip at the market:
Fish should smell of the sea (marine) and riverweed (freshwater)
There should be no unpleasant fishy odour
Eyes should be bright
Gills should be Red/Light pink in colour
No finger impression to be left on the skin when pressed
Should be purchased daily as far as possible
Nutritional Aspect:
All Seafood is rich in Protein
All Seafood is low in saturated fat
All Seafood provides Poly Unsaturated Fat including precious Omega-3
All fish are low in cholesterol
Seafood food is excellent source of Iodine, that mineral that modulates the thyroid gland
Seafood excellent source of Niacin (Vitamin B3), essential for healthy skin
Seafood also supplies Vitamin A, D and B1 and B12