What is it with my Betta fish water?

When I got home, I saw the brown viscous thing I thought was bad for him, so they were caught out.It was not there before and I have no idea what was.What I have in my aquarium decoration is a plant (real) (Pet-Co), Rock (of Pet Smart) and a few gravel.I Buddha.And not really 'know what is and is not poop.If fish know what is or have any questions ask me what I can help decipher what email me at cubanita44@rocketmail.com THANKS:).

Only fish poop. It looks brown and fibrous, sometimes hanging from his rear end without having to leave your body for a while. It is perfectly normal and can be removed when the empty gravel for a normal water change. Do not worry:) Edit: What about this deserved a thumbs down? Honestly curious, since I am sure that everything he gave in this answer is correct.

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