In the 300 gallon and the 75 gallon tank with the water bridge between them the following move between them,
7 clown loaches (3 Borneo and 4 Sumatra)
13 striata
16 kubotai and histrionica (can't tell them apart for sure yet)
6 SAEs
In the 300 gallon (They have not, and I doubt that these will ever go across the water bridge),
9 Rasbora trilineata (scissortail)
13 Rasbora borapetensis (brilliant, blacklined, or redtail)
In the connected 75 gallon (They have not, and I doubt that these will ever go across the water bridge),
5 Devario sequipinnatus (giant danio)
4 Hyphessobrycon callistus (serpae tetra)
That's 73 fish in the two tank system.
Here are a few pictures.




