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Sargassum
Sargassum natans
Family: Sargassaceae
📍 Sargasso Sea and tropical Atlantic
The iconic free-floating brown macroalgae of the open ocean — forms dense golden-brown mats in the Sargasso Sea. In aquariums it anchors to rock or tumbles freely. Hosts an entire ecosystem of cryptic animals (pipefish, frogfish, shrimp) in the wild. Challenging to keep long-term but impressive in large displays.
Keeping this species
- flow
- moderate
- note
- may require very bright lighting and nutrient supplementation to thrive long-term
- role
- display / biotope
- lightLevel
- high
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Natural Habitat Temperature
68°F — 81°F seasonal range · (Jan low, Jul high)