Ah, that's why I keep finding probably-Stegobium-paniceum (but haven't got around to keying one out under microscope yet) on the kitchen window. Bag of fish food bought for pond fish before I realised we were overfeeding the pond fish. Apparently they do quite well on koi/goldfish pond sticks. Don't get to work on post-harvest stored cereal pests any more or I'd keep them in culture! #Entomology #StoredProductPest #StoragePest #Ptinidae #Coleoptera #Beetles