【Anonymous Shipping】Edible Oyster Shells, 20 pcs - Shipping Included - Filter Material, Oysters, Shells

Edible Oyster Shells - 20 pieces

Ships via RakuRaku Mercari便 (easy shipping service)

Used for raising medaka (Japanese killifish).
How about using them for raising medaka, goldfish, or tropical fish?

Washed carefully with water without detergent
and dried in the sun.

There is a possibility that they may chip during shipping.
Please understand.