How long has the tank been up and running with fish in it?
How big, in gallons/litres, is the tank?
How many fish are affected?
How many fish are in the tank?
.
I've had a major over haul of this tank in the last month. This 55 gal. tank is a couple of years old. We moved a couple of miles across town the 1st of August. At that time it was mainly large aggressive fish. I also had a smaller tank (29 gal) which consisted of Goldie (the vieltail), some platys and mollies, that developed a leak during the move process so we put all of the fish together. Needless to say the mollies became fish food for the Oscar and the platys died. I had most of them about 3 years and they were ready to go on to the big fish tank in the sky anyway but Goldie was fine I thought. I started noticing that he was getting beat up (scales were coming off) by the semi aggressive fish that I had in there and I decided that I would rather have Goldie than the bigger one's. So I traded the bigger one's for some baby parrot Chiclids (I had a couple of them before the move that died the first week at the new place. We're thinking water quality? because they had no symptoms of being sick before) I use a Rena Xp filter system and I'm sure we took too much water out for the move. Anyway I thought I had the tank stabalized when I put the new one's in and they seem to be doing fine (I've had them about a week now).
Goldie is the only one that seems to be infected. As far as how many, besides Goldie there are the 3 parrot chiclids, 2 small cory catfish, 1 new small black moore, 1 old peacock chiclid that has never displayed much color. Explaining all this to you I think I solved my own problem. There have been too many changes in the last month. He's probably stressed out. I won't make any more changes to the tank but I don't want to lose Goldie. Do I need to put him in a separate tank to medicate. I've been doing some reading on the web tonight and I put 4-5 tablespoons of aquarium salt in the tank. I always use stress coat when I do a water change and I also use water conditioner because I use tap water.
Thanks for the information.
Before I discuss Goldie's illness I'd like to go over some basics concerning your tank as I realize it's been through a lot. As you have witnessed, stability or lack of it can cause major problems in an aquarium. The most important factor is water quality. You mentioned that water levels are fine so I'll assume that ammonia and nitrite=-0- and nitrates are 20 ppm or lower. An ideal ph range would be from 7-7.4 for the type of fish you have and the only issue here is the water temperature requirement. For goldfish a good water temperature range is 60f-70f degrees and for the other fish 75f-80f degrees.
Ok as for Goldie's illness. The blood streaks you are seeing are a major symptom of a disease called Septicemia which is basically a bacterial infection in the fish's bloodstream. If not caught in time it is usually fatal and sometimes even when caught in time it is fatal.
As Septicemia is contagious, the first thing I suggest you do is isolate the fish in a smaller quarantine tank using 75% water from the original tank and 25% new water
Add 1 teaspoon of aquarium salt per each 5 gallons of water. Begin to treat with a medicine called Maracyn Two, see link below. Maracyn Two is especially designed to treat Septicemia and a variety of other bacterial illnesses. It can easily be found at most major pet stores.
To give you some additional information, listed below are three links to web pages that will discuss Sepeticemia.
Best wishes and please let me know if you have any questions.
http://www.drsfostersmith.com/product/prod_display.cfm?pcatid=4842
http://www.geocities.com/shtinkythefish/diseases/septicemia.htm
http://www.petlibrary.com/goldfish/septi.htm
http://www.nippyfish.net/septicemia.html
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