rome5 wrote:
tank conditions and water are in perfect condition. I do a cleaning and water change like clock work and that was done on sunday. after the tank has the chance to cycle again i then check the parameters. the gap on each side of the hoods is only about 3 inches. to add some laughter i think the albino was betting the tiger "i bet you can't jump out of tank" and it won in some ways. it just now can't enjoy it. thanks for all fo the condolences.

you have posted twice.....
gap on top of the tank sometimes make your oscar think it is
another water area. same with arowana and piranha.
perhaps, there was flying insect on top of your tank. oscar tries to
grab it, only to find out no more water beyond that point....
screen cover will get you protected on that.