I think the Damsel has ich. There are tiny dots that look like miniature salt crystals back near the dorsal fin on both sides.
It's odd because we the Damsel fish was our starter fish from over 2 years ago. We haven't added any fish in a long time (maybe a year). None of them have ever shown ich symptoms before. I've heard that it can lie in wait, which means that even if we had quarantined (which we didn't) I don't see how we could have caught this.
Anyway, I've been researching treatment. Sounds like the general approach is to round up all the fish, put them into a hospital tank and treat them (whether they all have symptoms or not). Supposedly after 8 weeks, any ich remaining in the main tank will have starved to death due to lack of hosts.
I've never set up a hospital or quarantine tank, but am willing to try. Currently we only have 3 fish in a BC29. So I'm thinking about a bare bones 12 gallon, a HOB filter, heater, some PVC pipe for hiding, and frequent water changes. Maybe I can throw in some waste chaeto from my main tank's refugium.
The problem is that one of the fish is a Rainford's goby. He's never eaten anything but by sifting sand, and the occasional hair algae. Any hospital that I set up will not have a sand substrate, nor algae. I'm afraid that if I throw this picky eater into a bare bones tank, he'll starve.
Any ideas as to how I can keep the goby alive in the hospital? Maybe I should hospitalize the other two while experimenting with algae based foods for the goby and hope I get lucky?
Thanks in advance for any suggestions.