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.
Soft Green Algae. The main food of Otocinclus is algae. They will eat the soft green algae that grows on the surfaces of the tank and its contents. This surfaces include the inside of the tank walls, gravel, decorations, and plants. This soft algae isn't to be confused with green spot algae that you can barely get off with a razor blade.
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.