Goldfish Clocks and Light Cycles | Spokane News

Goldfish keep time with their internal circadian rhythms, guided by light detected through a pineal gland on their skull—no eyes needed. While zebrafish thrive on 16 hours of light and 8 of darkness, consistent feeding times may matter even more for goldfish, syncing their bodies to daily routines. These clocks aren’t just for naps—they trigger life-changing events like salmon’s epic migrations back home, and even help aquaculture experts control reproduction by tweaking light cycles. Listen in comfort:Get a discount on a Soli Pillow: http://solipillow.com/discount/dnn. Advertise on DNN:[email protected] This is an automated, high-level news summary based on public reporting.Report issues to [email protected]. View sources & latest updates:https://sources.thednn.ai/3587933717840ae9