67-7 1935hrs. Est. 300 - 350 fish on shelf. Males predominate. (I tried collecting a female and couldn't find one. Of course, conditions were not ideal, though.) Most of fish were on bottom. Although small schools on top: Approx. 5 in a school - perhaps a total of 50 fish on top. Feeding in algae - slight schooling noted. -> Western border of slope - Ab Area I algae "encoded" away - very sparse. They matter showing - so much so that no channels could be seen. Again eating grey matter. Many adults. A few young + small juvenile, but majority of fish adults + large juvenile. Beetle at edge and planaria somewhat active. Some play activity of fish. 1940hrs. Light rain. 1945hrs. (Between 1935 + 1950hrs, cloud cover darkened - flashlight now necessary to see fish. Slight Rain (but only very light and intermittent). Rain makes) water appear murky.) Air Temp: 87.6°F Water Temp: 33.8°C Light - Black } off scale (below) Red With Darkness, decrease in fish population 2000hrs. - Est. 100 fish on shelf. Also, higher proportion of smaller fish. Many adults appear to have