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Marine fish

Blue-green chromis Chromis viridis

The blue-green chromis is found in the Red Sea and across the Indian Ocean. They are often seen in very large groups above branching corals in sheltered reef areas. For spawning, males prepare a nest, shared with several females, in sand, or… Read more

Freshwater fish

Common carp (alien) Cyprinus carpio

Naturally occurring in Central Asia and parts of Europe, common carp are now found in many parts of the world.  Like most other alien species, they are hardy and can tolerate a wide range of conditions, thriving in dams and large turbid rivers. … Read more


Green sea turtle Chelonia mydas

Green turtles, as their name implies, are olive-green in colour with a relatively smooth carapace.  They have a short snout and their beak is not hooked as in the loggerhead turtle.  Adult green turtles feed mainly on seaweed and seagrass and… Read more


Giant bullfrog Pyxicephalus adspersus

This is the biggest frog in southern Africa. Giant bullfrogs are rarely seen, as they spend most of their time underground. Adept burrowers, bullfrogs retreat underground during the dry season, where they remain dormant for months, sometimes even… Read more

Marine invertebrates

Blue jellyfish Catostylus mosaicus

The blue jellies in the Two Oceans Aquarium were collected from one of the rivers near East London. Blue jellies are related to moon jellies and range in colour from very light blue to dark purple and burgundy. Jellies are considered a delicacy… Read more


King penguin Aptenodytes patagonicus

King penguins are the second largest of all penguin species. They live in large colonies on islands in the southern oceans. Unlike many other penguins, king penguins walk as opposed to hop while on land. They do not build nests, but carry a… Read more

Microscopic life


Life depends on plankton. Plankton is made up of microscopic plants (phytoplankton) and animals (zooplankton). Zooplankton feed on phytoplankton and drift with the currents. Plankton are very important in the marine food chain. The largest fish… Read more