Dropsy In My Tank

[bluealien98]

A couple weeks ago i saw one of my Zebra Danios in my 10g tank, dead with its scales kind of sticking out. i researched it because it was strange and i thought it could be dropsy, i did not want to freak myself out because i figured it wasn't really dropsy but now i know for sure it is because my poor siamese algae eater is so swollen he looks like a pine cone and he has sores and its horrible.
 
Anyways, i saw this last night and i rushed out and bought some Tetracycline and some stress coat stuff and added it to the water but after much debating i have decided to euthanize my SIA as he is really suffering. I have read a lot about this and i decided to go with clove oil as it seems the most humane. How much clove oil should i use? he is about 2 and a half inches long. 
 
Also, seeing as i have started treating my tank for the dropsy as many of my fish have just gone missing and i only have three left in the tank other than the SIA i am wondering whether i finish the antibiotics on the tank or if i should just leave it? 
the other fish are a zebra danio a platy and a beta. they all seem healthy and fine so im not sure what to do. 
 
Please help, all suggestions will be helpful right now. 

 

[fluttermoth]

Sorry to hear your fish is so sick

For euthanasia, you need 20 drops of clove oil per litre of water; you'll need to mix the oil with a small amount of the water by shaking it up in a jar, then add it to the rest of the water, with the fish in, in a separate container (one you won't want to use again, as the smell of clove oil is very strong and hard to get rid of; I use an old, clean, margarine or ice cream tub).

I would not use antibiotics in the tank if your other fish appear healthy.

Also, dropsy is a symptom (like back ache or stomach ache in humans), not a disease in itself; it has a lot of potential causes. We'd need more details of your tank to identify what might have caused it.