I think because the water is so clear that when I come out above on to the rancho they scatter. Maybe if I start feeding them they'll come out more often.
I would love to put those temensis in there. We'll see how it goes. After about two days of not cleaning it I start seeing the fish poop strings floating around. Not real cool with the wife. I was thinking about not feeding them at all, but with that big oscar in there the smaller baby fish have disappeared pretty quickly. I guess my little mini-ecosystems is pretty one sided on the consumption side. Just imagine a temensis in there.