Definition of "redeye"

Redeyes inhabit clear-water streams with an abundance of shoals and are usually confined to headwater sections.

1970 April, A. J. McClane, “The Sunfish Family”, in Clare Conley, editor, Field and Stream, volume LXXIV, number 12, New York, N.Y.: Holt, Rinehart and Winston, page 116, column 2

This is probably less of a barrier to mesopelagic species such as lanternfish (Lampanyctodes hectoris), redeye (Etrumeus whiteheadi) or gobies (Sufflogobius bibarbatus), all of which are capable of more extensive vertical migration than the small epipelagic fish.

2006, Carl van der Lingen et al., “Forecasting Shelf Processes of Relevance to Living Marine Resources in the BCLME”, in Vere Shannon et al., editors, Benguela: Predicting a Large Marine Ecosystem (Large Marine Ecosystems Series; 14), Amsterdam, Kidlington, Oxfordshire: Elsevier, page 330

The Common Redeye (Matapa aria Moore) is much smaller (wingspan: 40–55 mm), plain brown without any markings, but as in the Giant Redeye its eyes are red.

2000, Krushnamegh Kunte, “Family Hesperiidae: Skippers [Giant Redeye]”, in Madhav Gadgil, editor, India—a Lifescape: Butterflies of Peninsular India, Hyderabad, Andhra Pradesh: Universities Press, published 2006, page 213, column 2