Sera O-nip the tasty morsel consisting of carefully processed tablets can be attached to the aquarium glass by slightly pressing it with the finger. This allows watching the fish while they eat.https://www.aquaristikshop.com/aquaristic/Sera-O-nip/385043/
- Andrey S. wrote about Sera O-nip in 2016:
High-guality food suitable for daily use. My fishes love this food very much.