Good location to use the RX10 200mm optical & 400mm Clear Image Zoom. The two are almost indistinguishable.

Some aquarium clips are well above ISO1600, several are ISO3200. Aquarium shot at 24p, exterior 60p.

Phoenix Wildlife World Zoo & Aquarium (Sony DSC-RX10) on Vimeo

Phoenix Wildlife World Zoo and Aquarium.

Sony DSC-RX10
Manfrotto 560B Fluid Monopod
Gitzo GT2531LVL Tripod
Benro S2 Head
Polarizer