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MonWillis
05-22-2012, 04:38 PM
I currently have 2 spotted danios in my tank at the moment.

One is very healthy, whilst the other is looking very sick! It's tail looks like it's getting heavier and heavier and is unable to remain horizontal.. The fish sometimes rolls onto it's side and is looking very thin?

Is anyone able to assist?

rmiller
05-22-2012, 04:49 PM
In order to truly help we need a bit more info.

What size tank?
Who else lives in the tank?
What and how often do you feed?
How much and often do you change your water?
Do you change your filter media?
Water are your parameters for ammonia, nitrite, and nitrate?

With the answers to these questions we can help.

ScottishFish
05-22-2012, 04:53 PM
Tank size, if its cycled or not and other inhabitants would help.

My opinion is it may be malnourished and stressed, the other one will constantly chase harrass and steal its food.

MonWillis
05-22-2012, 04:59 PM
Hi,

The tank is a 60 cm tank, I only have the 2 danios and a pleco..

Feed once a day in the morning with red pellets. I tried to feed with a few flakes in addition to the pellets to see if it would help the sick fish as I did notice that the larger Danio was fighting for the food.

I recently did a water change, probably about a quarter of the tank?

Not too sure on the levels for ammonia etc.. did a PH test a few days ago and the levels were right..

Do you think I should separate the 2 fish and see if the feeding habits change?

When you mention cycled, is that in terms of the filtration system? Or of the chemical called Cycle?

Thanks for the help! My local fish store was of no assistance :(

ScottishFish
05-22-2012, 05:30 PM
Right before we go any further go and do a 75% water change and remember to use dechlorinator. You tank isn't cycled by the sounds of it, check out cycling in the beginner section.

Danios are schoolers and shouldn't be kept in numbers less than 10, also the term plecos is broad, what one specifically? Commons themself can exceed 60cm.

Also what's the other dimensions of your tank? LxBxH??

MonWillis
05-22-2012, 05:50 PM
The tank dimensions are 60 cm (width) x 33 (height) x 31 (width)

I have a plecostomus that is approximately 6 cm long?

I use a dechlorinator as well as product that is a biological aquarium supplement?

Will start the water change process now. Should I move the stressed fish into a separate area of the tank? I have a netting structure that I once used to separate the young fish from the rest of the tank? That way I could control the food?

ScottishFish
05-22-2012, 05:55 PM
I wouldn't say seperate them. Do your reading on cycling and then you can see where your at and sort your situation out :22:

rmiller
05-22-2012, 05:58 PM
So by my calculations we are working with a 16 gallon tank, about 60 litres. That is an extremely small tank for all of the plecos that I can think of. Do you know the scientific or common name for your pleco? And while we are on the subject, the names of the danios? Depending on what type they are they may not be compatible with your tank size.

MonWillis
05-22-2012, 06:21 PM
Unfortunately have no idea which pleco it is.. will try and find out from the shop.. I believe that the Danio is a spotted Leopard Danio? Does that help?

Doing to water change now so will see in the morning what happens and will read up on the cycling.. Thanks!