Tardigrade
From Warhammer 40k - Lexicanum
Tardigrade is a creature that the Highborn on Rokarth eat as a delicacy. Often eaten as steaks, their meat is flavourless and has a watery texture. Adepts often season tardigrade meat with off-world spices.[1a]
These enormous creatures can be found grazing in the thick swamps that are the algae fields of the lower hive.[1b]
Trivia
Tardigrades (also called water bears or moss piglets) are a type of 8 legged microscopic animals.