There is no gravel, it is CaribSea Peace River Sandarent you scared of the bichir eating that gravel and dying?
Ive raised the fish on this for years and it is a coarse grain sand. According to CaribSea it is a 1.0 to 2.0mm size. Ive never had an issue with this item. Realize too that you are looking at a 20” endli in the picture sitting on the substrate. To me it is sand, not a fine sand but a coarse grain sand. But to go back to your original concern, no they do not ingest this or have any issues.doesnt look like sand to me. thats def gravel stones but small. If its fine its fine. Maybe he or she wont swallow it. I got no experience with it since i only use sand tbh.
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