oh boy dying koi, angelfish that is

[mchimiak]

Per sticky#2 format:

1. 90 gallons
2. Water parameters just checked : GH 8 dH, KH 6 dH, pH 8, temp 80 degrees, NO2 is a hair over 0 mg/l, NH3 0, CO2 about 1.8 mg/l.
3. Fresh water
4. The tank is well established @ 8 months.
5. loach, pictus catfish, pleco, 8 tetras, dwarf gurami, 8 snails, 5 small angels (marbel, yellow and 3 koi).
All fish are medium except for small angels.
6. no quarantine tank
7. 80 degree temp ( I live in Florida)
8. 90% plant with driftwood piece (eventually moving to 100% plant). Gravel is pebble, florite plant gravel around live plants. {What can I say? I originally did'nt think I'd do natural plants, but I'm now facinated by them.
9. 405 Fluval filter (lovely system)
10. none
11. Lighting goes from sunup to about an hour or two after sunset.
12. I gravel vac 30% every other week.
13. I feed daily, but not much. Tetracolor flakes mainly, Spectrum cichlid food at times.
14. The koi were recently purchased two weeks ago. They weren't sickly but they weren't go-getters either.

Here is the problem cichlid below.

Here is one of the healthier koi angels

Here is a very healthy yellow angel

I was told the red gills are normal for koi angel fish, but somehow I suspect that may not be true. Any thoughts on what might be the trouble? It's a pretty koi, but I suspect bad stock.

 

[nguyendetecting]

he looks pretty rough sorry to say. I would put him out of his suffering... How long have you had them?

 

[mchimiak]

I just bought the koi angels about two weeks ago.

 

[GuppyGirl1230]

Do you have a QT tank? If so, I would QT the fish. If your water quality is what you stated, I think the fish must have some sort of genetic disease. It does not look like fungus or bacteria. Unfortunately you will probably lose the fish. I am sorry, I know how much it sucks. Good Luck.

Maribeth

 

[Cerianthus]

It is not easy task to differentiate the healthy redness and illed redness unless have experienced keeping koi angels/fishes. Usually ones with many breeding tanks, it should be easier task to differentiate.

I really cant tell if this is environmental stress factors or infectious diseases by looking the pics.
I would isolate the fish and If possible, accliminate it into bit lower pH. You can use distilled water to drip into isolation tank until desired pH is reached.. Hopefully there is an improvement.

btw, what kind of CO2 test kit are you using?

 

[mchimiak]

Sorry guys, the koi died. Thanks for the input. The other koi lived and is thriving. My small angels will be with me for the next few years, so I'll write this off to stress and slightly high end pH. Even though this is a 90 gallon tank with a modest population, I think it just too difficult to maintain several angels in one tank. (They are gorgeous, but can be a bit mean to newcomers.)

I love this website.

P.S. We need an emoticon for R.I.P., perhaps a packman toilet bowl.

 

[KevG]

sorry to hear.
I lived through the exact same situation. I had two angels one decent size pearl and sometimes black stripes and the other was much smaller and looked exactly like yours, he had the same red gills.
Well after about 2 months of having him I found him belly up one day. The other angel is perfectly fine. Also I have not had any diseases or other problems in my tank (knock on wood).
So I beleive you are right when you say bad stock, bad genes.
Here is a pic of mine :tombstone: