The German company Muskator-Werke GmbH is expanding its range of fish feed for hobbyists and breeders through cooperation with Dutch firm Coppens International bv. Coppens exports its internationally successful branded products like "TroCo" and "KarpiCo" to over 20 countries. Muskator is starting off the cooperative relationship with ten varieties of "TroCo" trout feed and eleven varieties of "KarpiCo" carp feed.