I have two common Plecos in my tank both about 8 inch and purchased at the same time when about 1 inch. Over the last few days the smaller one has changed colour from a chocolate brown to a yellow brown.
Any ideas on what would be causing this and do I have anything to worry about or is this normal as they mature?
If it's a problem what would be causing it and how to I save him?


Any ideas on what would be causing this and do I have anything to worry about or is this normal as they mature?
If it's a problem what would be causing it and how to I save him?

