Sounds like they are just reaching sexual maturity. The iridescence you describe is common in adults. -----Original Message----- From: gsas-member-bounces@thekrib.com [mailto:gsas-member-bounces@thekrib.com] On Behalf Of Meg Apshaga Sent: Sunday, January 17, 2010 12:27 PM To: Greater Seattle Aquarium Society member chat Subject: [GSAS-Member] Norman's lampeye killifish Hi all, I am looking for someone with knowledge of Norman's lampeyes. I have a couple that I bought accidentally (they were mis-identified at the store). They've been doing well in my shrimp tank, but today I noticed something strange: one of them has had an odd change with its eyes. The black pupil part has become smaller, and the eyes are now rimmed with gold. They still have the blue highlight on the tops of the eyes. This fish also has developed some blue iridescence on the end of its tail. It is swimming and eating normally. The other fish shows no sign of these changes. I am pretty much a total newb at this (first tank since my childhood was started last January) and haven't uncovered much information on these fish. Anyone have any ideas what's going on? Should I be worried? Thanks in advance for any info... Meg _______________________________________________ GSAS-Member mailing list GSAS-Member@thekrib.com http://lists.thekrib.com/mailman/listinfo/gsas-member _______________________________________________ GSAS-Member mailing list GSAS-Member@thekrib.com http://lists.thekrib.com/mailman/listinfo/gsas-member