Green colored tissue in zebrafish.. Need explanation!!!
 

A week after inducing cancer in Zebrafish I was able to find a green colored tissue in them. Many zebrafish that was induced with cancer in our laboratory had this particular green colored tissue. I have not seen such a green colored tissue in an ordinary zebrafish.

Can any one explain me what was it due to? Have you come across normal Danio having this type of green tissues?