April 2014. This exhibit contains plecostomus, redfin plochilodus, rosy barb, rummynose tetra, silver hatchetfish, skunk loach, albino zebra danio, bala shark, black neon tetra, and black skirt tetra. There are 25 wall tanks (most of them small) in this interior exhibit hall, organized into 4 alcoves around a larger central tank.