Its shape and size alone make it a very attractive pellet (+/- 13mm) for any sucker mouth fish. Made with the best ingredients available, this scientifically formulated diet fulfills the dietary requirements of any herbivorous fish. This Spirulina boosted pellet will not leach in the aquarium. Feed only as much as your fish can consume within two hours. Provide all the dietary requirements your fish deserve. Easily digestible. Easy to nibble. Made from the finest ingredients available.