Boxfish is not kosher according to Jewish dietary law. Has fins but lacks the true removable scales required for a kosher fish, so boxfish is not kosher.

What is the scientific name of Boxfish?

The scientific name of Boxfish is Ostraciidae.

Does Boxfish have fins and scales?

Boxfish does not meet the requirement of having both fins and removable scales. Leviticus 11:9-12 requires fish to have both fins and scales to be considered kosher.

Can I eat Boxfish sushi or sashimi?

No. Since Boxfish is not kosher, it should not be consumed in any preparation, including sushi or sashimi.

Where can I find more information about whether Boxfish is kosher?

KosherFish.co references the Orthodox Union (OU) and Chabad lists of kosher and non-kosher fish. For specific halachic questions, consult your local Orthodox rabbi.

Boxfish

Ostraciidae

Not Kosher

Has fins but no scales

Fins Yes

Scales No

Description

Boxfish live in the Atlantic, Indian, and Pacific oceans, generally at middle latitudes. Their hexagonal plate-like scales are fused into a solid, box-like carapace, with the fins, tail, eyes, and mouth poking out through it.

Boxfish in foreign languages

Scientific	Ostraciidae
Hebrew	קופסינוניים
Arabic	سمكة الصندوق
Portuguese	Ostraciídeos
French	Poisson-coffre
German	Kofferfische
Russian	Кузовковые
Chinese	箱魨科
Japanese	ハコフグ科
Korean	거북복과
Vietnamese	Họ Cá nóc hòm
Thai	วงศ์ปลาปักเป้ากล่อง

Warnings & Kosher Issues

Has fins but its plate-like scales are fused into a rigid bony carapace rather than the loose, removable scales kosher law requires, so it is not kosher.
Boxfish secrete a skin toxin called pahutoxin when stressed, which dissolves into the surrounding water and can harm nearby fish.