Red Rash on Silver Dollars

[cjmarshall925]

A couple of my Silver Dollars have developed a red rash under their mouths (sort of like on their chins - sorry don't know the technical terms) - it's not on all 5, just on 2. And it seems to come and go. Water parameters are excellent - I do a 50% change every weekend. No other change in behavior that I've noticed. Eating well, etc. Can anyone tell me wassup?

Thanks!
CJ

 

[snoopy65]

What exactly are you parameters to include temp? Size of tank? Other tankmates? And can you get a pic? These things will help us help you.

 

[cjmarshall925]

75 Gal FW w/450 HOB and 2715 Ehiem Canister. 1 Angel; 10 Red-tail Rasboras; 2 Rainbows; 1 Geo Jurapari; 2 x-ray tetras; 4 red eye tetras; 5 Red Hook Silver Dollars; 1 Gold Gourami; 1 pleco; 2 cory's; 1 arawanna cat; 1 glass cat;

Ammonia -0-
Nitrite -0-
Nitrate appx 20
temp 76

I've tried to get pics - only 1 with it showing now and of course, he's just NOT cooperating! Quick little buggers!
Has anyone seen this in SD's?

 

[ChrisK]

Really need to see a pic. What type of test kit are you using?

 

[excuzzzeme]

The red under the chin is not a rash but is normal coloring as they become adults.

 

[cjmarshall925]

What great news! My babies are growing up!

Thanks!

 

[cjmarshall925]

Just to be sure - here are some pics.

 

[Sploke]

Exc is right - as they reach maturity, they get red coloration on their "chin" and gill cover areas.

 

[cjmarshall925]

Thanks! I feel better now : )

 

[ChrisK]

Yep that is normal coloration.