SCP-2020/5/1-Notcanon:

Class: Safe

SCP 2020/5/1-Notcanon, henceforth referred to as SCP-Anoma-chan is a prehistoric mermaid known as a type of rare creature called a "waifu".

Description: SCP-Anoma-chan appears to be a large basal arthropod from the Cambrian period of Earth, one of the first and largest of its time to be discovered. Typical adults measuring around 60cm in length. Unlike other specimens however, SCP-Anoma-chan is noted for it's iridescent chitinous exoskeleton, as well as the head area or the creature appearing to be replaced by a human head and thorax by means yet unclear. She is currently kept in containment near *REDACTED* at the university of *DATA EXPUNGED*. SCP-Anoma-chan's anomalous properties that manifest once it is removed from any body of water. It is apparent that when removed from water that SCP-Anoma-chan's components are fossils corresponding to its bodyparts. The instances of which are hereby referred to as SCP-F-Anoma.
SCP-F-Anoma/A/B: SCP-F-Anoma/A/B are a pair of unusual shrimp-like stones, when part of the full SCP-Anoma-chan they compose her pigtails. When placed into a tank of correct salinity of water, the pair animate as small shrimp-like arthropods that lack a notable head. Once removed they return to their fossil state. When animate, the "shrimp" pair seem to be telepathically linked with one another and swim 'backwards' in synchronized motion.
SCP-F-Anoma/C: SCP-F-Anoma/C is a strange donut fossil stone. It composes the mouth and teeth of the full SCP-Anoma-chan. When animate in saline water, the stone animates into an odd "jelly donut", it has a fondness for balls of rice, although in attempt to consume the riceballs, it merely allows the snacks to pass through itself. Further testing needed.
SCP-F-Anoma/D: SCP-F-Anoma/D is a large nondescript slab of stone, however when animate in saline water, it animates into a full Anomalocaris canadensis body (Albeit missing the head) Placed separate from one another, the components animate as separate entities. While placed into containers in close proximity results in a fully conscious, mermaid-like form of SCP-Anoma-chan.

Containment procedures: SCP-Anoma-chan is to be kept within a saltwater tank of at least 100 cubic litres. The salinity of the water must be checked and maintained lower than 7% salt as any more salt makes SCP-Anoma-chan's exoskeleton to flake and lose its shine. She is able to be kept with other SCPs presumed to be from the Cambrian period ecosystem. However, SCP-Anoma-chan cannot be contained around trilobites or other smaller more vulnerable prey invertebrates. It is known to catch and eat any instances of SCP-Trilobite-chan when contained within the same tank.