Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
Please post a closer pic under same lighting.
What the fish are showing is hypermelanization. This is a reaction of the skin to certain injuries. A common cause is being stung by corals or anemones. Some parasites can cause this but that is rarer. There is one called black ich that is common on tangs. Caused by a turbellarian worm under the fish’s skin, it causes black spots. Those look different though, like little black spots.I have an anemone and a few LPS Jay, but not sure if they are stinging .. do you think they may be stings ? I also have this picture of the scopa tang with similar issues :
Thanks Jay, I’m assuming it is black ich because I had a few tangs and various fish that died suddenly.What the fish are showing is hypermelanization. This is a reaction of the skin to certain injuries. A common cause is being stung by corals or anemones. Some parasites can cause this but that is rarer. There is one called black ich that is common on tangs. Caused by a turbellarian worm under the fish’s skin, it causes black spots. Those look different though, like little black spots.
Jay
Thanks Jay, I’m assuming it is black ich because I had a few tangs and various fish that died suddenly.
Thank you Jay, as always, for your feedback and advice. It’s always appreciated.Except that the turbellarians I'm talking about cause small, distinct black spots, like pepper. This fish has larger, more diffuse spots. It is probably a parasite or infection, but I can't tell you what though.
For black ich, the best treatment is a 45 minute formalin dip at 150 ppm with good aeration. Trouble is, formalin is tough to source, and then it is toxic to people, so you need to take care when using that in a home.
Jay