Fish is the dominant source of protein, cultivated in ponds and fished with nets in the fresh-water rivers of the Ganges delta. More than 40 types of mostly freshwater fish are common, including carp, varieties like "rui" (rohu), "katla", "magur" (catfish), "chingŗi" (prawn or shrimp), as well as "shuţki machh" (dried sea fish) are popular. Salt water fish ilish is very popular among Bengalis can be called an icon of Bengali cuisine. Unlike neighboring West Bengal, serving dishes with beef is not a taboo in Bangladesh. Beef curry is a very common and essential part of Bengal cuisine.