delusion of negation (nihilistic delusion) a depressive delusion that the self, part of the self, part of the body, other persons, or the whole world has ceased to exist. paranoid d's an older term for delusion of grandeur and delusion of persecution; its use is discouraged. delusion of persecution a delusion that one is being attacked, harassed, cheated, persecuted, or conspired against. It is one of the subtypes of delusional disorder.
Oto Catfish. These fish are perhaps the best kind of fish that you can get for the purposes of cleaning away algae from the plant matter in your fish tank. Their favorite type of algae to eat is brown algae, something that most other fish will stay away from.
The most commonly eaten seaweed in this group is sea lettuce (Ulva lactuca). Most green algae are found in freshwater. There are approximately 5,000 species of marine green algae. Once washed ashore, seaweed seems to be nothing more than gooey, smelly, fly-infested garbage.However, as unpalatable as they might seem, seaweeds are, in fact, extremely important plants.ost green algae are found in freshwater. There are approximately 5,000 species of marine green algae. Once washed ashore, seaweed seems to be nothing more than gooey, smelly, fly-infested garbage. However, as unpalatable as they might seem, seaweeds are, in fact, extremely important plants.