When I got my Oto's they were all fairly small and looked pretty much the same. Now though six weeks on, one of them appears to be turning green on the top half of it's body. 
I ordered them online so didn't get to stand and see them in a tank prior to buying.
Do I have a different species of oto appearing than the rest? I've never seen them looking a greeny/yellow colour before.
I ordered them online so didn't get to stand and see them in a tank prior to buying.
Do I have a different species of oto appearing than the rest? I've never seen them looking a greeny/yellow colour before.
