During the Battle of France, German forces did not occupy Paris.
Aufwuchs -LRB- German `` surface growth '' or `` overgrowth '' -RRB- is the collection of small animals and plants that adhere to open surfaces in aquatic environments , such as parts of rooted plants .. German. German language. In both marine and freshwater environments , algae -- particularly green algae and diatoms -- make up the dominant component of aufwuchs communities .. algae. algae. green algae. green algae. Small crustaceans , rotifers , and protozoans are also commonly found in fresh water and the sea , but insect larvae , oligochaetes and tardigrades are peculiar to freshwater aufwuchs faunas .. insect larvae. insects. oligochaetes. Oligochaeta. Many aquatic animals feed extensively on aufwuchs .. The mbuna cichlids from Lake Malawi are particularly well known examples of fish adapted for feeding on aufwuchs .. mbuna. mbuna. Lake Malawi. Lake Malawi. Examples include Labeotropheus trewavasae and Pseudotropheus zebra .. Labeotropheus trewavasae. Labeotropheus trewavasae. Pseudotropheus zebra. Pseudotropheus zebra. They have scraper-like teeth that allow them to rasp the aufwuchs from rocks .. In marine communities , aufwuchs food sources are important for animals such as limpets and sea urchins .