These are Happy Aquarium Animals that aren't fishes.
“A platypus is a venomous mammal (not a bird) that lives in Australia and swims in aquariums and...Platypus
“The Chinese River Turtle is a water turtle in China. People eat turtles in China. You can help...Chinese River Turtle
“Nautilus is the common name of cephalapod family, Nautilidae, the sole extant family of the...Nautilus
“The hydra is a mythical monster in Ancient Greece. It is a monster Hercules battles, but then...Hydra