Answer for How much fat found in Hilsa fish?

The fat content was recorded 18.66% in dorsal portion (Chittagong region), 20.28% in ventral portion (Chittagong region), 19.71% in caudal portion (Chittagong region), 18.65% in dorsal portion (Khulna region), 19.15% in ventral portion (Khulna region) and 19.00% in caudal portion (Khulna region).
 
Reference:

• Shamin MAH, Ahmed MK, Abdullah ATM (2011) PROXIMATE COMPOSITION OF DIFFERENT PORTION OF HILSA, TENUALOSA ILISHA FROM TWO REGIONS OF THE BAY OF BENGAL IN BANGLADESH. Dhaka Univ. J. Biol. Sci. 20(2): 109‐115