The problem is if he jumps again and lands on the eggcrate or screen and can't flop back into the water he is dead for sure. I have a 29gal biocube and have had many fish jump into all the chambers. The only one I lost was a sixline wrasse. He jumped at night and went to sleep under the pump, which fried him. The sixline had jumped 3 other times during the day and did just fine.