My black oscilaris clown fish, today had white string by his gills on each side that went away in a few hours. His slime coat looks more noticeable and his eyes look a bit dull. He is eating well but his mouth is opening and closing quickly. He also is not in his anemone today and is just chilling by some rock. I'm wondering if this is an internal parasite.?
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![20240515_092341.jpg 20240515_092341.jpg](https://www.reef2reef.com/data/attachments/3583/3583945-8e2451b56f0427eeaa3fb3a2907f61c9.jpg)