Long Fin Danio Not Eating/Losing Weight

[WaterBaby]

I have a long fin danio, about 1 month in the tank. I bought it with a few other long fins. I have noticed that it is getting rather "rail-like" looking in the past few days. Today, I observed it while I fed the tank. It looked like it wanted to eat, and made a half-hearted attempt to eat, but didn't. All the other fish in the tank look healthy and are eating. By the way, I am feeding them dry flakes. I did buy frozen bloodworms thinking that it maybe it doesn't like the dry flakes, but haven't tried them yet. However, as thin as it's getting, you'd think that it would eat anything if it was starving. It may be something else.

I lost another fish about 1 1/2 months ago (a blood fin tetra) which had the same symptoms. It was bought before the Danios. Could it be internal parasites, or a bacterial infection. What do you suggest to try? Isolation of the suspect fish? Medicated flakes for all? I don't want to lose my tank.

Thanks

20 Gal Long
pH 7.6
0 Ammonia/Nitrites
Nitrates 20ppm

4 Scissortails
3 Blood Fin Tetras
2 Lemon Tetras
4 Long fin Danios (Soon to be 3 I fear)

 

[WaterBaby]

Trying to post a pic

Sorry if it's fuzzy, but you can see how thin it is. If it doesn't work, how do you post a pic?

 

[OrionGirl]

I've seen that happen with the line bred danios--it's likely going to start getting a humped back as well. IMO, these line bred fish are weaker, and there's not enough culling going on to remove those that are genetically inferior. Not much you can do about it.

 

[WaterBaby]

You're right!!

It is getting a hump back. It's gonna die isn't it? That's a shame. It really is, or was, a pretty fish.

Thanks for the reply,

Michele

 

[OrionGirl]

They can live for many months in this condition, but IMO, it's kinder to euthanize. The other danios will start nipping at it, increasing the odds of a bacterial infection which could affect others in the tank. If you can isolate it in it's own tank, it will likely live for a few years without problems.

 

[WaterBaby]

Euthanized the fish today (

It just looked so sad, so off to the freezer in the dixie cup coffin.

You know, I have been reading about fish tb and the more I read, the more I hope this is not what it had. Like I said in my original post, I lost another fish to this a month or so ago, and now looking back on it, I think it was another long finned danio, not a blood fin tetra.

Now upon closer inspection, another long fin is looking rather scraggly and thinning out. None of the other fish are showing signs though. Question is "Why all of a sudden"?