What two major categories dominate the adult White Sturgeon diet in many river systems?
Answer
Fish species and Crustaceans.
As the White Sturgeon matures into a large adult, its dietary composition shifts significantly to accommodate much larger, more energy-dense prey items, moving away from microscopic organisms. In numerous river systems, the diet becomes heavily concentrated on larger life forms. Fish species represent a major component, frequently including bottom-dwellers like sculpin or schooling species like smelt. Additionally, crustaceans form a substantial staple, with crayfish being noted as a particularly favored, high-protein food source wherever they are abundant. While mollusks and larger invertebrates are consumed, fish and crustaceans are highlighted as the primary dominant categories.
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