For as long as I've had my axolotl, I've been seeing my own hair in the tank, mostly it sticks to the surface of the water, but sometimes it sinks down. Unless there's loads of it, I wouldn't worry. But it might be a good idea to prevent this happening if you can. Whenever I see one, I take it out immediately, but just because it's unsightly and I really worry about my little guy over any little thing that might harm him
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