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  L# Hengeli Rasboras fading colour
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SubscribeHengeli Rasboras fading colour
Mychael
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Small Fry
Posts: 8
Kudos: 4
Votes: 0
Registered: 16-Aug-2006
male singapore
Hi

I have a 60 litres fishtank with 13 Hengeli Rasboras, 17 Cardinal tetras, 6 glowlight Danios in it. 2 days ago, I observed that one of the Rasbora have a very pale colour and a slight bulge in the stomach. The fins and gills looks fine and there is no strange behaviour (e.g gasping for air and such). It is also eating. All the other fishes are fine. To be on the safe side I had the water changed.

What is a possible cause for this pale dis colouration? Anyone with similiar experience please advise.Thanks

Myc
Post InfoPosted 18-Aug-2006 10:00Profile PM Edit Report 
Calilasseia
 
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*Ultimate Fish Guru*
Panda Funster
Posts: 5496
Kudos: 2828
Votes: 731
Registered: 10-Feb-2003
male uk
Quick question.

Is this discolouration located on the back of the fish, in the region of the dorsal fin? And does it look as if it's developing a 'saddleback' appearance?

If that is the case, you might want to check this thread out and check for Columnaris.

If the discolouration is located lower in the body, it could still be Columnaris, or it could be a Microsporidian. Personally, I hope it's Columnaris, because that's a treatable bacterial infection. Many Microsporidians are incurable.

Another possibility is piscine tuberculosis - difficult to treat, but possible. This page covers piscine tuberculosis in some detail. Mind you, the treatment options for that are likely to be expensive, and in the case of Isoniazid, difficult or even impossible to obtain without a veterinary prescription.

For the time being, start treating with Melafix and observe closely for progression of increasingly morbid disease signs. If the condition is arrested by the Melafix, all well and good. If not, check out the above as possibilities, and act accordingly.

First of all, fingers crossed that it's nothing serious, and secondly, if it is something serious, that it's treatable.

Oh, and post water parameters sometime - every bit of information helps!


Panda Catfish fan and keeper/breeder since Christmas 2002
Post InfoPosted 20-Aug-2006 21:10Profile Homepage PM Edit Delete Report 
Mychael
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Small Fry
Posts: 8
Kudos: 4
Votes: 0
Registered: 16-Aug-2006
male singapore
The fading colour is more like for the whole fish rather than to specific part of the fish. The whole fish looks less shiny and colouration not as bright as compared to the others. Today I have noticed that the fish scales are starting to protrude out ( sort of like our hair up on our skin ) I have removed the infected fish but noticed that there is another 2 more fishes which seem to have the same pale colour but no protruding scales yet. I am concerned that is maybe contagious.

Sorry I am unble to post any photos. photos did not come out well.

Post InfoPosted 21-Aug-2006 03:28Profile PM Edit Delete Report 
Calilasseia
 
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*Ultimate Fish Guru*
Panda Funster
Posts: 5496
Kudos: 2828
Votes: 731
Registered: 10-Feb-2003
male uk
Protruding scales? Ah, dropsy.

Fluid retention. Usually a result of partial or total liver failure. not likely to be curable I'm afraid unless you're fortunate and it's non-infectious constitutional dropsy, in which case a change of water parameters might help ... basically, if the fishes are in very soft water, increase the hardness gradually using sodium bicarbonate and see if the fluid retention ceases. If not, and the scale protrusion becomes more ounced, then sadly it's a euthanasia case.


Panda Catfish fan and keeper/breeder since Christmas 2002
Post InfoPosted 21-Aug-2006 04:35Profile Homepage PM Edit Delete Report 
Mychael
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Small Fry
Posts: 8
Kudos: 4
Votes: 0
Registered: 16-Aug-2006
male singapore
Thanks I have qurantine another 2 more fishes that looks like having the same symptoms of pale colouration. The first have already died. Still trying to save these 2.

Myc
Post InfoPosted 22-Aug-2006 03:16Profile PM Edit Delete Report 
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