HSN code directory

HSN Code 1605: Crustaceans, molluscs and other aquatic invertebrates

Crustaceans, molluscs and other aquatic invertebrates, prepared or preserved


All 8-digit HSN codes under this heading

HSN codeDescription
16051000Crab
16052100Shrimps - shrimps and prawns - -not in airtight container
16052900Shrimps and prawns-shrimpts and prawns - - other
16053000Lobster
16054000Other crustaceans
16055100Molluscs - - oysters
16055200Molluscs-- scallops, including queen scallops
16055300Molluscs--mussels
16055400Molluscs--cuttle fish and squid
16055500Molluscs- octopus
16055600Molluscs-clams, cockles and arkshells
16055700Molluscs--abalone
16055800Molluscs--snails, other than sea snails
16055900Molluscs--other
16056100Other aquatic invertebrates--sea cucumbers
16056200Other aquatic invertebrates-- sea urchins
16056300Other aquatic invertebrates--jellyfish
16056900Other aquatic invertebrates--other


GST rate guide for this chapter

Sausages, prepared or preserved meat and fish, and extracts are generally taxed at 5% after the September 2025 rate changes.


GST rates depend on the exact description of the goods in the rate schedules, not only on the HSN code. Some goods under the same heading are taxed at different rates, and conditions or exemptions can apply. Confirm the rate for your product before you raise invoices.


Frequently asked questions


How many digits of the HSN code must I show on a GST invoice?


Businesses with aggregate turnover of up to ₹5 crore in the previous year must show at least a 4-digit HSN code on B2B invoices. Businesses with turnover above ₹5 crore must show a 6-digit code on all invoices. The full 8-digit code is used for imports and exports.


What is the difference between an HSN heading and an 8-digit HSN code?


The first 2 digits are the chapter, 4 digits are the heading and 6 digits are the subheading under the international Harmonized System. India adds 2 more digits for a more precise tariff item, giving the 8-digit code used in customs and GST.


What happens if I use the wrong HSN code?


A wrong HSN code can lead to tax being charged at the wrong rate, mismatches in GSTR-1 and the HSN summary, and notices with interest and penalty. If you are unsure about classification, a CA can review it before you file.


Need help with classification or GST rates? GST registration and return filing or book a free consultation with our CA-led team.