Skinny Dying Fish :(

[nic1]

Hello,
I'm new here but I thought I'd dive right in as I need urgent help...
I have a 300ltr tropical tank, minimal plants, recently added redmoor and sand substrate.
I currently stock
2 male guppies,
4 Molly's
4 mixes corydora
3 pink zebra danio
3 zebra danio
1 fantail goldfish
1 koi

Temp 23 degree or 73
Ammonia 0
Nitrites 0
Nitrates 10
PH 6.8
Tank set up for 3 years

ok heres what happened, I added 2 corys, the Molly's and pink danios slowly over the course of 2 months, so not to disturb the balance, I noticed a pink danio was really skinny but not diseased. After a week he was dead...then my other fish, a danio and a Cory were really still and sank to the bottom, they died, then today a guppy has become really skinny and is now in a trap which I'm treating with aquarium salt..... could they be diseased? I'm afraid for the other tank members as the skinniness took hold really quickly and within 48 hours they die?

I do a 20% water change every Monday.... the last fish dies Tuesday, could that be a concern?

Please help, thanks.

 

[Dmbandstef]

Maybe a parasite? Did this start happening after you added the sand? Maybe you didnt rinse the sand good enough?

 

[nic1]

Oh no, I added the sand ages ago.... that was bad paragraphing there! Just the redmoor is new and the fish... I think its a parasite but I don't know how to treat it or where to begin as I have never come across this before?
What meds are good to use in the UK?
ATM I'm using aquarium salt and a general tonic, but they are still skinny and the guppy now is swimming towards the top rather than floating but his spine looks a little crook?
Thanks

 

[star4]

It does sound like internal parasites,  Have you noticed any red looking worms hanging out of the anus of the fish at all, they normally appear when the fish is at rest and disappear back inside when the fish moves. If so then its camalanus worms and a good treatment for these is sera nematol (or nemotol). If they fish have clear stringy poo it could be other internal worms and protozin is pretty good at getting rid of those. 

 

[nic1]

I watch my tank quite intently and I haven't noticed any red worms but I have noticed white poo....
I'm going to get some meds and see if that works, thanks for the advice, I will let you know if that works

Thanks.

 

[star4]

Good luck . Once you have completed the medication feed the fish some de-shelled cooked peas, these will act as a laxative and help the fish pass any dead parasites, also do extra water changes to help with bacteria. Dead parasites in the gut can cause bacterial problems. Or you could medicate with an antibacterial medicine but make sure you allow the recommended waiting time with changing medications, this can sometimes cause more problems.

 

[nic1]

Good luck . Once you have completed the medication feed the fish some de-shelled cooked peas, these will act as a laxative and help the fish pass any dead parasites, also do extra water changes to help with bacteria. Dead parasites in the gut can cause bacterial problems. Or you could medicate with an antibacterial medicine but make sure you allow the recommended waiting time with changing medications, this can sometimes cause more problems.

Hiya, I ordered some protozin but on the label it said it would be harmful towards snails and shrimp, I have two lava snails a handful of trumpet snails and shrimp, so I ordered some ocotzin, I'm still waiting for it now... i swear my postman is a thief, a few letters turn up open... but that's another story...
In the end I starved them for a day, fed them peas soaked in garlic and watched for them passing any parasites, then I carried on with this process for 4 days, starved them for the 5th day then treated with melafix, so far so good.... and I'm still waiting for my octozin and if it does come I will use it to kill off any left over nasties. I read that garlic starves internal parasites and some people use it for new fish in case of parasites.

 

[WILDER]

The meds you ordered are no good. One's for whitespot, and the other for hole in the head. 
You need the medication star suggested sera nematol.

You need this medication.
http/www.amazon.co.uk/sera-Nematol-10ml/dp/B0013Z9A3E/ref=sr_1_2?ie=UTF8&qid=1395233529&sr=8-2&keywords=sera+nematol
 
 
 

Camallanus

 

 

Symptoms:

When the fish is stationary, deep red worms can be seen protruding from the anal pore. They are only visible when the fish is still because the worms retreat into the intestine at the fish�s slightest movement. Other signs may include an inflamed and enlarged anus. In severe infestations, the fish may become emaciated and spinal curvature may also occur.
 


 

Cause: 

The parasitic worms Camallanus Cotti and Camallanus lacustris. These small, livebearing parasitic worms attach to the intestinal walls and rectum with pinchers. The worm�s grip is so tight that any attempts to remove it forcibly will rip away tissue from the intestinal wall. The worm�s pinching causes ischemia (reduced blood flow) to that part of the intestine. In time, the tissue to that part of the intestine will die, at which time the worm will migrate to another part of the intestine. This causes perforations throughout the intestine, which allows other pathogens to gain entry. If the fish is not treated, either the parasite or bacterial will kill the fish. Camallanus infestations occur most often in livebearing fish such as Guppies and Mollies, though infection is possible in all fish. Camallanus infestations are contagious. All fish, including those not yet showing visible symptoms, as well as the aquarium, should be treated.
 


 

Treatment: 

Treat with Internal Parasite Guard, Pipzine, Disco-Worm, Trichlorfon or Fluke-Tabs as well as a medicated food to prevent a bacterial infection.

 

[nic1]

Oh thank you!
I wasn't sure what to use as I have never had to deal with this before...
Been looking on line for meds and any natural remedy but never came across Sera nematol, I will check it out thanks

 

[WILDER]

Good Luck.
Follow Star advice backing up with anti internal bacterial medication by interpet afterwards.

 

[Guppiegarage]

The meds you ordered are no good. One's for whitespot, and the other for hole in the head.
You need the medication star suggested sera nematol.

You need this medication.
http://www.amazon.co.uk/dp/B0013Z9A3E/?tag=




Camallanus

Symptoms:

When the fish is stationary, deep red worms can be seen protruding from the anal pore. They are only visible when the fish is still because the worms retreat into the intestine at the fish�s slightest movement. Other signs may include an inflamed and enlarged anus. In severe infestations, the fish may become emaciated and spinal curvature may also occur.

Cause:

The parasitic worms Camallanus Cotti and Camallanus lacustris. These small, livebearing parasitic worms attach to the intestinal walls and rectum with pinchers. The worm�s grip is so tight that any attempts to remove it forcibly will rip away tissue from the intestinal wall. The worm�s pinching causes ischemia (reduced blood flow) to that part of the intestine. In time, the tissue to that part of the intestine will die, at which time the worm will migrate to another part of the intestine. This causes perforations throughout the intestine, which allows other pathogens to gain entry. If the fish is not treated, either the parasite or bacterial will kill the fish. Camallanus infestations occur most often in livebearing fish such as Guppies and Mollies, though infection is possible in all fish. Camallanus infestations are contagious. All fish, including those not yet showing visible symptoms, as well as the aquarium, should be treated.

Treatment:

Treat with Internal Parasite Guard, Pipzine, Disco-Worm, Trichlorfon or Fluke-Tabs as well as a medicated food to prevent a bacterial infection.

Do you know of a similar product but ,shrimp safe .