http://forum.aqua-fish.net/ A forum devoted to aquarium fish, plants, techniques and fish keeping as a whole. en http://forum.aqua-fish.net/?topic=guppies-amp-8217-eyes-get-dark#1 My Guppies males’ eyes get dark sometimes. Their eye lids (good term?) get completly brown/black in a moment. After a few seconds, it disappears and it looks normal. Is it anything bad, or is it normal? Does it apply to males only? Maybe hormons? Does anybody have any experience of this kind? Those two guys make love to a group of females for about 1-2 months. original post: December 15, 2006, 3:37 pm anonymous 2008-04-30 http://forum.aqua-fish.net/?topic=guppies-amp-8217-eyes-get-dark#2 In my experience, fish’s eyes get dark if they’re scared or if they’re affraid of something. anonymous 2008-04-30 http://forum.aqua-fish.net/?topic=guppies-amp-8217-eyes-get-dark#3 The same thing happend to most of my Guppies males. They were attempting to nail the females in all cases. There’s no fear or so. Peter anonymous 2008-04-30