Do I have to declare aquarium fish at United States customs?

No — within the allowance it passes without a declaration.

What happens if I do not declare aquarium fish in United States?

Under 19 CFR 148.102, if you declare the excess yourself: a flat-rate charge is applied to the excess; the normal duty becomes payable on the excess. Under 19 CFR 148.18, if the goods are found without being declared: the goods are confiscated; an administrative fine is imposed. Under 19 U.S.C. 1497: the goods are confiscated; an administrative fine is imposed.

Can I post or ship aquarium fish to United States instead of carrying it?

Not under this allowance. It covers goods a traveller carries; a parcel is an import and is assessed under the postal rules instead. Baggage sent before or after you travels under the same allowance.

Can I take aquarium fish out of United States?

United States publishes no separate rule for taking aquarium fish out; the destination's rules are what will apply.

Does the United States limit for aquarium fish apply per person or per family?

Per person. Each traveller carries their own allowance and it cannot be pooled with anyone else's.

Where does this rule come from?

U.S. Customs and Border Protection states it in What Can I Bring? Complete List. CarryRules last confirmed that sentence at the source on 2026-09-19. The sentence it rests on reads: “Live fish in water and a clear transparent container are allowed after inspection by the TSA officer.”

How does United States compare with other countries on aquarium fish?

Of the 20 countries covered here, 2 prohibit aquarium fish, 14 limit it and 4 let it through. United States is among the ones that set a limit.

How much Aquarium fish can I bring into United States?

Allowed

You can bring Aquarium fish into United States without a special limit.

Cabin baggage —

Checked baggage —

Declaration Not required

Limit No stated quantity

What you need to know

No stated quantity
Channels: Carried with the traveler

Important

This allowance applies per person, not per family or group.

Official sources

Last verified 2026-09-19

What Can I Bring? Complete List Transportation Security Administration

Questions about Aquarium fish in United States

Do I have to declare aquarium fish at United States customs?: No — within the allowance it passes without a declaration.
What happens if I do not declare aquarium fish in United States?: Under 19 CFR 148.102, if you declare the excess yourself: a flat-rate charge is applied to the excess; the normal duty becomes payable on the excess. Under 19 CFR 148.18, if the goods are found without being declared: the goods are confiscated; an administrative fine is imposed. Under 19 U.S.C. 1497: the goods are confiscated; an administrative fine is imposed.
Can I post or ship aquarium fish to United States instead of carrying it?: Not under this allowance. It covers goods a traveller carries; a parcel is an import and is assessed under the postal rules instead. Baggage sent before or after you travels under the same allowance.
Can I take aquarium fish out of United States?: United States publishes no separate rule for taking aquarium fish out; the destination's rules are what will apply.
Does the United States limit for aquarium fish apply per person or per family?: Per person. Each traveller carries their own allowance and it cannot be pooled with anyone else's.
Where does this rule come from?: U.S. Customs and Border Protection states it in What Can I Bring? Complete List. CarryRules last confirmed that sentence at the source on 2026-09-19. The sentence it rests on reads: “Live fish in water and a clear transparent container are allowed after inspection by the TSA officer.”
How does United States compare with other countries on aquarium fish?: Of the 20 countries covered here, 2 prohibit aquarium fish, 14 limit it and 4 let it through. United States is among the ones that set a limit.

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Accompanied cash Accompanying goods, non-commercial (flat-rate band) Agricultural/forestry/fishery/livestock products (general sub-cap) Alcohol and alcoholic beverages above 22% vol (or undenatured ethyl alcohol 80% vol and over)

Related countries

Australia Canada China France

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