Help with parasite ID

Can you tell me what this is at the base of the dorsal fin? This fantail is just over 1 inch long. What would be the best way to treat?

Can you tell me what this is at the base of the dorsal fin? This fantail is just over 1 inch long. What would be the best way to treat?

Can't seem to open it.

For true external parasites, though, I reach for Hydrogen Peroxide. 1 Tbspn per 20 gallons. Remove the carbon from your filter and turn the flow down. Dose every 24 hours.

Can't seem to open it.

For true external parasites, though, I reach for Hydrogen Peroxide. 1 Tbspn per 20 gallons. Remove the carbon from your filter and turn the flow down. Dose every 24 hours.

I just tried it here at work. I got a warning message saying something along the line of the file extension did not match the file format and do I want to try and play it anyway. I clicked yes and it opened in Windows Media Player and RealPlayer, but not in QuickTime Viewer.

I did some reading on H2O2. Very interesting. Here are some of the better links I came across that detail concentrations to use, treatment times, mortality rates, and persistence of H2O2. I think I'll give it a try.

http://books.google....W10Mg#PPA247,M1

http://fish.bakerweb.biz/peroxide.html

http://www.umesc.usg...ski_01_2000.txt

http://www.haworthpr...A...G6&ID=40480

I just tried it here at work. I got a warning message saying something along the line of the file extension did not match the file format and do I want to try and play it anyway. I clicked yes and it opened in Windows Media Player and RealPlayer, but not in QuickTime Viewer.

It's not working here, or at work.

I can open it. Looks odd, kind of like white grub. I have never seen white grub in darters.

It's not working here, or at work.

I removed the video attachment and uploaded the video to Google Video. The quality is greatly reduced but the parasite is still visible.
Here is a link to the video.

Here is a frame from the video.
 Fantail_darater_parasite_0001.jpg   39.14KB   0 downloads

Almost looks like you could pluck it right off.

Almost looks like you could pluck it right off.

I agree, but the fish is small and the parasite is 1 mm at most so I'm worried I'd do more harm than good. I'm leaning toward a combination of a high concentration salt dip followed by an H2O2 dip for all of my fish. But I need to do a little more studying to come up with concentrations and durations.

Encysted yellow grub. Scrape membrane (of darter) covering parasite. Should pop out as membrance appears very thin. A bright yellow, leach-like critter with faint segmentation will then fall away. External acting medications will have no effect. Treat fish antibiotic dip toprevent seconadary infection associated with removal wound.

Encysted yellow grub. Scrape membrane (of darter) covering parasite. Should pop out as membrance appears very thin. A bright yellow, leach-like critter with faint segmentation will then fall away. External acting medications will have no effect. Treat fish antibiotic dip toprevent seconadary infection associated with removal wound.

You called it! I finally got up the nerve to remove this thing and it did indeed turn out to be a small worm or grub. It was so small I couldn't really tell which. It was no more than 3mm long. It was definitely encysted and difficult to remove, but once I got through the cyst it popped right out. The fish is doing well one day later, I'll keep an eye out for secondary infection.
Mark