...again

Psi

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I'm not in the habit of frequenting these forums so I apologise in advance and in retrospect to those who help(ed) if I don't reply immediately (or worse, at all...), BUT...yet again, my fish are in peril.

I have several young killifish of the F. gardneri variety and all was going reasonably well until recently, when several took ill. The illness presents with symptoms of clamped fins (that is, instead of fanning out in the typical shovel or round shape, the edges taper into a point at the end, or in the case of fins on the body itself are held against the skin), followed by a decreasing ability to swim properly (this begins as slight difficulty and progresses to an inability to remain buoyant), and a gradual (though not so gradual it's unnoticeable or not the cause of distress for me) ceasing of feeding, concurrent with a "wasting away" in which the gastric region becomes hollowed and eventually looks as if someone's come along with a knife and excised it entirely from the fish silhouette.

I'm not sure what the story is. I've not had this problem until the recent months and never so prevalent - at first I thought it was just the result of perhaps an inborn illness, but that has proven not to be the case. I'm aware illnesses are often associated with water quality, although I have an undergravel filter so it isn't a filtration issue and I've had no other problems in my other tanks while sourcing water from the same place. I don't have a water testing kit, and mean to remedy this - actually, I meant to remedy it a long time ago but being on a student's budget has thus far prevented me from doing so.

According to different sources, my guess it's a bacterial infection; however, there are no signs of exophthalmus, nor of any cloudy eyes. I called a pet shop of good reputation locally, and they suggested it may be internal parasitism; however, I can't see any signs of worms. Worse, I was informed that the medication used for worms is no longer being imported into the country due to some of the chemical constituents (although whether this stands up to further investigation I don't yet know) - so if it is worms I'm not sure how much luck I'm going to meet with.

Has anyone any recommendations in terms of which treatments to use? Methylene blue seems not to have any effect despite repeat doses being given. Might the answer be as simple as adding aquarium salt?

Related to this is the presence of white, stringy faeces in one of my fish; it isn't presenting with any other symptoms or signs, aside from a general lack of desire to move or feed. Again, help is appreciated because I do care a great deal about my fish, and I'd hate to lose more to some unknown illness.
 
Wasting away can be internal parasites to fish tb.

Internal parasites signs are.
Long stringy white poo or clear mucas poo.
Being thin or bloated.
Red inflamed to enlarged anus.
Worms hanging from the anus.

Internal parasites cause bacterial infections as if the fish is infesed with the worms they damage and destroy the internal organs.
 
Thanks. What would you suggest I do about the situation?
 
I'm in New Zealand.

Thanks for the link, I'll have a look at it. Right now, though, the fish with the mucus/stringy faeces has taken to floating just under the surface, the right way up, with her mouth open. Her belly doesn't look distended or bloated, but for the amount she hasn't eaten over the past few days, she's looking pretty wellfed. The scales on her left side seem to be standing out slightly, but that's only visible from above. I'd like to think it's not that she's also suffering from dropsy, but I'm not sure what it looks like so I'm not at all sure I can rule that out either.
 
When scales stick out yes its dropsy, organ failure the fish then rarely make it sorry.
 
Unfortunately she died.

However, I still have sick babies - I took a couple and some water into the pet shop in a bottle and they did a water test - all values were apparently normal, except the pH was low - about 6. So I bought some pH raising solution, and went home and did another pH test with my neighbour's test kit...and I got back, literally, a value of 7.0-7.2. So something in the bottle obviously lowered the pH, and so being told it was most likely the acidity of the water making the fish ill turned out wrong.

I still have absolutely no idea what's wrong with the babies, and now they're all ill; I think I have a total of six left out of the original eleven. I can't treat a condition nobody knows the identity of and it's really quite stressing me out.

Advice?
 
If fish are wasting away and livebeaers are prone to camallanous worms.
The mother can pass them onto the young when there inside her.
I wouldn't advise using ph adjusters there not worth the hassle, best to find out why the ph dropped.
 
Hm, well killifish while distantly related to liverbearers like guppies (hence my comparison) aren't the so-called livebearing toothcarps but egg laying ones. I don't think it's worms at any rate - the mothers of the young haven't been affected. The only female adult to die has been one that hasn't bred yet, and she died from what looks like dropsy, as I think you suggested. The young are about two or three months old, as well, so any infection of worms surely would've cropped up sooner...I just call them babies of habit due to a need to distinguish them from the adults.

I'm not sure what the deal is. I just hope it's not going to be a case of count them as they go.
 

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