Male Guppy Turning Black

[drufly]

i was jus cleaning out my tropical tank, when i noticed that 1 of my male guppys is turning black. Its dorsel fin and under belly and tail have gone black. It is normally a silverish colour with an oramge and black spotted tail. It is not swimming right and just now has started to lie on the rocks on its side.

Water stats
ammonia 0
nitrite 0
nitrate 25
ph 7.2
gh 6
kh3

Anybody any ideas

It now cant sim good at all. He is just getting blown about in the current

 

[smegforbrains]

It could just be old age, or it could be an internal parasite.


I would quarantine immediately, more for the sake of the other fish than anything else, I don't think he is within the powers of any medication from what you have said.


I would take the precaution of dosing the tank with Melafix though for a week just to make sure that anything nasty left behind is killed off. Up the temperature to 28-30 degrees celcius for this period. Bear in mind though that you will need to increase oxygenation during the treatment period so you may need to use an airstone.

 

[drufly]

I have an air stone running all the time anywayjust for the look. the tank is filtered with a ehiem 2215 and the internal, which is now just really for airation as the ehiem took everything over.

Would myaxzin do the job of the melafix untill i het a bottle tomorow?

 

[smegforbrains]

Not 100% sure if you can mix both of these meds so I would err on the side of caution and say no.


I would isolate the Guppy and do a decent water change on the tank. Although, if you have just done a change, just do another tomorrow before adding any meds.

 

[drufly]

Will do although it not looking good atm.

Hopefully it will be ok

Cheers Dru

 

[WILDER]

Have you had an ammonia reading lately.
Turning black can mean quite a number of things from cancer to fish tb.

 

[drufly]

Well tried to do what i could for the little fella but what ever it was it did finally kill him. I still dosed the tank with melafix after he died to make sure it didnt spread.

Oh and wilder no i aint had ammonia readings for quite some time.

 

[WILDER]

Ok that fine black patches can be ammonia burns that are healing.
Keep a close eye on other fish.
Good Luck.
R.I.P. Bless Him.