Vampire Shrimp (Viper Shrimp)

The Filter Feeding Mandate and The Starvation Death:

The Floor-Scraping Warning Sign. They are 100% obligate filter-feeders. They CANNOT bite or chew anything. They rely entirely on finding a high-flow spot (right in front of the filter output or a wavemaker pump), gripping the wood with their spiked legs, and holding their beautiful feathery fans open in the roaring current to catch floating baby shrimp food, spirulina powder, or tank debris. THE FATAL ERROR: If you see your massive Vampire Shrimp walking on the sand, closing its delicate fans into little 'spades', and desperately digging through the gravel... IT IS STARVING TO DEATH. It is destroying its specialized fans in a panicked attempt to eat off the floor because your tank water is too clean or has no flow. You MUST target-feed them micro-powder foods blown directly into the water current.

The Molting Vulnerability and Hiding:

The Soft Jelly Phase. Despite looking like a heavily armored medieval tank, they are cripplingly shy cowards. They demand thick, dark caves (ceramic pipes or stacked rocks) to hide in. When they molt (shed their giant shell to grow), their entire 6-inch body becomes as soft as wet jelly for several days. During this critical window, ANY aggressive or curious fish (Cichlids, Tiger Barbs, Loaches, Puffers) will easily rip them apart and eat them alive. They MUST be kept exclusively with small, 100% peaceful nano fish (Tetras, Rasboras) and given impenetrable hiding caves.