Kusuri Silkworm Pupae 3.5kg (pouch)

Japanese breeders recognise silkworm protein as the best supplement for Koi nutrition and Koi colour enhancement.
Koi can easily absorb the special protein and silk oil qualities of Kusuri Silkworm Pupae.


Koi enjoy the flavour of Kusuri Silkworm Pupae, making it the perfect supplement to add to your fish's diet during the summer when temperatures are higher.


These dried silkworm pupae from Kusuri are rich in silk protein, which improves colour distinction and vibrancy. They should be fed as a high-protein dietary "treat."


They will soon be eagerly anticipating you if you treat them some Kusuri Silkworm Pupae at the same time every day.

Is delivery free?

We offer free delivery on the majority of our products over £50. This excludes live fish and bespoke filters. Delivery to UK mainland addresses is £3.95 as standard, or £6.95 for express.

How do I return a product?
Get in touch via email or phone and let us know your problem, we will then help as much as possible. A postage address will be given for you to return the product back to us, and postage will be refunded where applicable to our terms and conditions, which are in line with consumer rights.

At Steel City Koi, we offer a wide range of safe and secure payment options when shopping with us.

Accepted payment methods:

Debit/Credit Cards (Inc American Express)

BACS (for faster dispatch of products) please get in touch for this

Cash upon collection *only for live fish

Pay Later options currently include Klarna and Clearpay