My Rainbow Fish Has A Growth Above Its Eye, Help!

[Lexirene]

I have a small rainbowfish in my tank that has a white-purple fungus growing around the top of its eye. Its eye isn't bulging, so I don't really think it's pop eye. I forget the full name of my fish but it starts with an f and it's a type of rainbowfish that is for smaller tanks. My tank is 10 gallons, I have the rainbow, a honey gourami, three pygmy corey cats, three cherry shrimp and a snail. My tank is well planted with plenty of driftwood and I do water changes every few weeks. I dose iron, potassium, trace and excel for my plants about every 5 days. I feed about every other day and switch off between small fish formula pellets and mysis shrimp. I use a sponge filter because I was told carbon filters could remove beneficial things for my plants. I've had my tank for about 8 months now and my water levels are as follows:
nitrates: 0
nitrites:0
GH: between 75 and 150
chlorine: 0
KH: 120
pH: 7
I use strips though, so they aren't totally accurate...

I'm worried about using antibiotics and salt... any suggestions on what I should do?
 
 

 

[Ch4rlie]

Am thinking your rainbow fish is Featherfin or Threadfin Rainbowfish, these are small fish.
 
Did originally sound like pop eye but if thats not the case then I will not be of much help am afraid 

Am afraid I do not know much abut illnesses in any fish.
 
Sometimes the trouble of using meds is they may do more harm than good if the diagnosis of illness/disease is not correct.
 
Also some meds are not good for shrimps and snails, so watch out for that.
 
So be careful and try and do a bit of online research to see if you can come across anything remotely similar and post on this thread and see if anyone will comment. Good luck.

 

[Ninjouzata]

No idea on the illness side, but could it be a forktail (furcatus) rainbow?
How often and what % do you do water changes? Have you added anything recently?
Can you get your hands on a liquid test kit, since the test strips don't test for ammonia & indeed are quite inaccurate?

 

[Lexirene]

Yeah its a furcatus rainbow! thanks! I ordered the drip test kits online, and so far the only ones that have come are KH and GH and those numbers were:
KH: 89.5 and GH: 161.1 and I subsequently added some neutral regulator to lower the GH. As for water changes, I usually do around 15-25% water changes and I refill it with half RO water and half tap with neutral regulator since the tap water where I live is really hard.

Sorry it took me so long to get the picture up! I had trouble formatting it to get the file size to be smaller!