Sorry about your goby...We had one of our favorite fish, a flame hawk, that was one of the first in our display tank. He jumped into the overflow a few times, but the last time right onto the carpet...
I also have a pair of skunk clowns in a 24 nano, whenever I would top off the tank, the water line was at the very top of the overflow..We have a spotted hawk in that tank as well, although he was not rough he did chase them from time to time and one would jump into the overflow. This last time he landed on the bio-sponge, good thing I checked the tank that day, he probably had just jumped. The skunks are now in a tank of their own....

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72 gallon bowed 150lbs LR 60 lbs LS
2 Percs
1 Chevron Tang
Hippo Tang
Six Line Wrasse
Coral Banded Shrimp
Cleaner Shrimp
Starry Blenny
4 Lyretail Anthias
Long Polyp Toadstool
Montipora
Long Tentacle Anenome
Short tentacle plate
Pulsing Xenia
Green Star polyps
Frogspawn
29 gallon
2 Clown
1 Coral Beauty
1 Fairy Wrasse
24 FOWLR
Dwarf Lion
125 gallon African Cichlid Tank
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