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Free-living flatworms are mostly predators, and live in water or in shaded, humid terrestrial environments, such as leaf litter. Cestodes (tapeworms) and trematodes (flukes) have complex life-cycles, with mature stages that live as parasites in the digestive systems of fish or land vertebrates , and intermediate stages that infest secondary hosts.
Photos show the worm’s overall body shape and pinkish coloring. A Prosthiostomum huidongense, or Huidong marine flatworm, as seen from above (left) and below (right). Photos from Liu, Lin, Wang ...
Platydemus manokwari, also known as the New Guinea flatworm, is a species of large predatory land flatworm. Native to New Guinea , it has been accidentally introduced to the soil of many countries, including the United States. [ 3 ]
Bipalium kewense, also known as the shovel-headed garden worm, is a species of large predatory land planarian with a cosmopolitan distribution. [1] [2] It is sometimes referred to as a "hammerhead flatworm" due to its half-moon-shaped head, but this name is also used to refer to other species in the subfamily Bipaliinae.
Pseudocerotidae is a family of flatworms which includes the Bedford's flatworm. Pseudocerotidae are simple organisms categorized by their oval bodies and tentacles [7] and bright colors. They use the cilia to glide along surfaces. [8] Most commonly referred to as marine flatworms, closely related to the orders Macrostomorpha and Lecithoepitheliata.
Cotyleans, on the other hand, with as many as 16 families, are prominent members of tropical coral reef communities and have bright, colorful bodies. Although cotylean flatworms are conspicuous predators in subtropical and tropical ecosystems, they are difficult to study. These worms are very fragile and when disturbed can break apart.
Rhabdocoela is an order of flatworms in the class Rhabditophora with about 1700 species described worldwide. The order was first described in 1831 by Christian Gottfried Ehrenberg. [1] Most of rhabdocoels are free-living organisms, but some live symbiotically with other animals. [2]
Credit: Getty Images. 32 types of saltwater fish for your aquarium. ... Brightly colored and affordable, the yellow wrasse is a useful fish as it combats pyramid snails and flatworms. While they ...