  Hilsa is the national fish of Bangladesh. Bangladesh is earning a lot of
foreign currency by exporting this fish. Unfortunately, in recent days, some
unscrupulous businessmen are selling fake Hilsa fishes to gain profit. The
Sardines and Sardinella are the most sold in the market as Hilsa. The
government agency of Bangladesh, namely Bangladesh Food Safety Authority said
that these fake Hilsa fish contain high levels of cadmium and lead which are
detrimental for humans. In this research, we have proposed a method that can
readily identify original Hilsa fish and fake Hilsa fish. Based on the research
available on online literature, we are the first to do research on identifying
original Hilsa fish. We have collected more than 16,000 images of original and
counterfeit Hilsa fish. To classify these images, we have used several deep
learning-based models. Then, the performance has been compared between them.
Among those models, DenseNet201 achieved the highest accuracy of 97.02%.
