Hikari Silkworm Selects (500g)


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Hikari Silkworm Selects (500g)
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Hikari Silkworm Selects (500g)

Hikari Silkworm Selects (500g)

  • Uses a centuries old traditional ingredient
  • Proprietary process reduces chances of silkworm oxidation
  • Adds weight rapidly while improving sheen and luster
  • Heightened lipid and protein levels in a formulation koi will readily use
  • A flavor even the most finicky koi will love
  • Medium sized floating food suitable for koi over 20cm
  • Floating diet for easy monitoring.
  • Can be used with auto-feeder
  • Works well mixed in with other diets
  • Available in 500g

Hikari Silkworm Selects is made from by products of silk production. Silkworms eat large amounts of leaves and store energy so that the emerged adults can lay healthy eggs. During silk production, the cocoon is boiled to obtain the silk, this unfortunately leads to the death of the pupae inside. The pupa contains loads of vital nutrition which would otherwise go to waste. In Japan, where silk production has been a key industry for centuries, the unwanted pupae would be thrown to the fish rather than left to waste. Unlock the secret of Japanese Koi farming with this Hikari food.

The nutritional value of silkworm pupae differs depending on place of origin and season, but it tends to contain high amounts of lipids and protein. Dried silkworm is 23-26 % lipid and 55-59 % protein. Care should be taken not to use oxidized, poor quality silk worm as this can result in Sekoke disease.

Koi are omnivorous fish, and will naturally feed on insects and small crustaceans, if your pond is too clean for these invertebrates to gather, then this important food source is lost and their diet is missing a key component. Dried silkworm is known as a one of the best diet supplements and is an excellent way of offering an invertebrate food source.

To this day, many koi breeders in Japan are using dried silkworm as a supplement to encourage better growth, particularly in the summer when water temperatures are high. It is of course effective for koi keepers as well but it was not easy to find or store, until now! 

The lipids in Silkworm Pupa oxidize easily when stored without proper treatment. Thanks to the high-tech extruding process with added natural anti-oxidants, Silkworm Select can’t be oxidized for several months. That being said it is still not recommended to offer this food past its sell-by date. 

Silkworm pupa meal, wheat flour, wheat germ meal, spirulina, dried seaweed meal, choline chloride, vitamins and minerals.
Analytical Constituents:
Protein 31%, Ash 9%, Moisture 10%, Fat Content 16%, Fibre 3%
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Delivery costs for your order will be calculated during the checkout process based on your delivery address and the contents of your basket. You will only pay one delivery charge for your order. Express delivery is FREE for online orders OVER £39 unless any of the points below become a factor.

  • Some large items like aquariums, ponds and pond liners will have an additional charge of £45.00 to help offset the cost of a pallet delivery.
  • Orders containing a physical gift card will have an additional charge of £2.45 to cover the cost of materials and delivery (digital gift cards are a free alternative).
  • Orders to highlands, islands and Northern Ireland may incur an additional delivery charge displayed at checkout this is based on the postal code provided. DPD provides a list of postal codes which have additional surcharges. Some of these post codes may also take 2 working days to arrive, even on express. Pallet deliveries cannot be sent to these post codes.

We only ship to the UK and cannot ship internationally.

We aim to dispatch items that are currently in stock on the same working day if they are ordered before 2.45 pm (excluding Bank Holidays). Orders after 3pm will be dispatched the following working day, unless it fits any of the below criteria:

  • Orders containing live plants will take up to 2 weeks to arrive. We take a week's worth of customer orders and then inform the plant farms of the specific quantities we need to fulfil that week's order to avoid wastage.
  • Pallet orders containing large items like big aquariums will take additional time to arrive as they are sent by a third party. These orders will NOT be dispatched until we have been in touch to arrange a delivery date, this is to ensure someone is available at your address to sign for the delivery. Deliveries will generally be delivered ‘curb side’ within the terms of the agreement we have with our couriers so you will need to make arrangements to transfer larger items into your home yourself. Unfortunately, our drivers are not insured to transfer the aquarium into your home.
  • Physical gift cards and items from the gift shop (such as clothes, towels etc) are sent with 1st Class Royal Mail. Delivery usually takes 1-2 working days, though in rare cases and orders placed closer to public holidays (Christmas, Father’s day, Mother’s day etc.) may be longer.


If you are not 100% satisfied with your purchase online from our website, you can return the product and get a full refund or exchange the product for another one, for up to 21 days from the date you purchased it.

We strongly suggest signing up for an account with fishkeeper.co.uk as this will allow for some additional returns options like return to your local store.

If you checkout as a guest you will need to return the product to Maidenhead Aquatics, PO Box 619, Egham, Surrey, TW20 2BS, please package the order (along with a packing slip or a note including your name, address and order number).

Large pallet items like aquariums are deemed delivered successfully with no damage once the the driver has left the property. If a report of damage is submitted after the driver has left we may be unable to assist with replacements. We recommend refusing a damaged delivery, this is the fastest resolution.

Our full terms and conditions can be found here. When you place an order with us online you are agreeing to these terms and conditions.

For delivery before Christmas, orders must be placed on or before 3pm on Wednesday 20th December. We cannot guarantee delivery of these orders pre-Christmas as we are reliant on our couriers, but will use our best endeavours to get orders placed on this date out to you before Christmas. For full details of our festive delivery and opening times click here

Please note: online orders placed after 3pm on Friday 22nd December will not be dispatched until the New Year. For full details of our festive delivery and opening times click here