Yellow Perch and the hypoxia Goldilocks zone

It may seem obvious that suffocation is not good, but determining a fish’s tolerance for low oxygen is increasingly important as hypoxia increases worldwide. Hypoxia (low dissolved oxygen concentrations) occurs naturally—it develops in the hot summers and cold winters beneath ice in small lakes and ponds. Hypoxia can also occur as a result of human…

Predators reject yellow perch egg skeins

Yellow perch produce eggs in gelatinous ribbons, but so far nobody knows why. We explored this peculiar trait by conducted some experiments to see if these ribbons protect eggs from predators. Helpless and delicious. Fish eggs and larvae are an energy-rich meal for predators. For some species, predator consumption of eggs and larvae can reach up…