My Brooklynella videos appeared popular so here is my take on Marine Velvet.
I got in a passer anglefish that came down with velvet after a couple weeks in QT. Here are his symptoms:
1. hiding from light in back corner
2. loss of appitite
3. pale/washed out color
4. very rapid breathing(gilling)
Yesterday I performed a 5 minute freshwater dip with RODI plus baking soda, temperature adjusted to match the QT at 77f. I then placed the fish back in the same QT and dosed CP at 12.5 mg/l. This morning he was out swimming and almost looked fully back to normal. I'll update this thread as his condition changes.
As part of the diagnostic, I carefully checked the dip water and found the 'snow' that is frequently described for velvet. I then used a dropper to capture a few 'snows' to inspect under the microscope and get video of the parasite.
The video is captured using an iPhone camera held to a microscope at 800x. The first half of the video shows a group of dinospores(free swimming stage) and the second half shows what appears to be an early tomont or mature trophont that fell off the fish.
!!As a warning to fellow fish-keepers, this video was take more than 6 hours after the slide was prepared, so the live dinospores are able to live in pure freshwater for a significant time and I can easily imagine them reinfecting fish if dip water is used twice, or allowed in any way to get back into the system.
https://www.youtube.com/watch?v=kHUJCmdBfJo
I got in a passer anglefish that came down with velvet after a couple weeks in QT. Here are his symptoms:
1. hiding from light in back corner
2. loss of appitite
3. pale/washed out color
4. very rapid breathing(gilling)
Yesterday I performed a 5 minute freshwater dip with RODI plus baking soda, temperature adjusted to match the QT at 77f. I then placed the fish back in the same QT and dosed CP at 12.5 mg/l. This morning he was out swimming and almost looked fully back to normal. I'll update this thread as his condition changes.
As part of the diagnostic, I carefully checked the dip water and found the 'snow' that is frequently described for velvet. I then used a dropper to capture a few 'snows' to inspect under the microscope and get video of the parasite.
The video is captured using an iPhone camera held to a microscope at 800x. The first half of the video shows a group of dinospores(free swimming stage) and the second half shows what appears to be an early tomont or mature trophont that fell off the fish.
!!As a warning to fellow fish-keepers, this video was take more than 6 hours after the slide was prepared, so the live dinospores are able to live in pure freshwater for a significant time and I can easily imagine them reinfecting fish if dip water is used twice, or allowed in any way to get back into the system.
https://www.youtube.com/watch?v=kHUJCmdBfJo
