Sorting of dried fish

Fish is an extremely perishable food item and required preservation for future uses. Several preservation methods are followed over the world for preserving fish. Aim of all these methods is same- to extend the shelf-life of fish so that the fish can be used in future properly. One of these methods is "drying” which is the oldest known method of preserving perishable food items including fish. In Bangladesh, sun drying is the most widely used method of fish preservation. This method is also considered as the least expensive method ... Read more »

Presence of numerous black spot on the bright-orange body surface of the fish makes it different from other five snakehead species in Bangladesh although the external characters are same. The external characters of the fish mostly found to be similar with Channa barca but a critical difference is found while comparing the body colour of these two specimens. The body colour of Channa barca is black spots on grayish-black skin but the new specimen is completely bright orange coloured with black spots.

Therefore, gradually a question arises that, is this change of colour occurs due to the breeding periodicity of the fish? But this possibility is very less because no record of colour changes of Channa barca is found elsewhere during the breeding season. Even the present time (Nove ... Read more »