Sick Red Robin Gourami's

[Bala Sharker]

the one in the front is turning a shade of black. there is two fish out of four changing colour like this i am pretty sure i saw whiteish colour poop and have heard this could be a sign of worms. the fish behind it is the colour i bought them

can anyone advise me on what to do

Tank size: 15 gal
pH: 7.4
ammonia: 0
nitrite: 0
nitrate:15

tank temp: 25 c

Fish Symptoms (include full description including lesion, color, location, fish behavior): colour change, no obvious behaviour change, eating well, no observed bullying

Volume and Frequency of water changes: 15% weekly

Tank inhabitants: 7 harlequins 4 red robins

Recent additions to your tank (living or decoration): gouramis added bout a week ago

 

[Bala Sharker]

bump need advise dont want any fatalities

 

[WILDER]

Black colouring can be bad water quality, bacterial, fish tb, cancer, damage to skin.

Does the fish act listless and lethagic.
Does the fish rest alot, leaning to oneside, or tilting to oneside.
Does the fish struggle to stay balanced.

Long stringy white poo can be constipation, bacterial, internal parasites.

What do you feed the fish.

 

[Bala Sharker]

fish is not showing any signs of change of behaviour since i got it it is very active. i feed them flakes but bought some pellets today would that be a change or are they the same thing, i also bout what i thought was brine shrimp but was in flake form is that what its ment to be. all tests show amonia and nitrite is 0 wud it be the ph at 7.6 or temp at 77f that mite not be suitable

 

[WILDER]

I would introduce some frozen foods and veg into there diet.
Frozen daphnia and brime shrimp good.

Cook some frozen peas for a few minutes. Let cool down and pop out of shell.
Mush into small pieces and add to the tank.

If the peas don't clear the stringy white poo up get back to the board.

Some daily water changes.
If the black shading dosn't disappear in a few days, get back to the board.