1. Bangladesh Fisheries Research Institute, Riverine Sub‐Station, PO Box‐8, Rangamati‐4500, Bangladesh,
2. Nautilus Consultants, 30/6 Elbe Street, Port of Leith, Edinburgh EH67HW, United Kingdom and
3. International Food Policy Research Institute, 2033 K Street, N.W., Washington, D.C., 20006–1002, United States of America