Marlin and Nemo are Ocellaris clownfish, a type of orange clownfish that live in sea anemones, just like in the movie. This type of clownfish is typically 3 to 4 inches long with bright orange coloring and white stripes outlined in black.

Why was Nemo a clownfish?

As fish biologist Patrick Cooney explains: “Nemo hatches as an undifferentiated hermaphrodite while his father transforms into a female (now that his female mate is dead). Since Nemo is the only other clownfish around he becomes a male and mates with his father, who is now a female.

What type of fish is Nemo and Dory?

One example of this features the friendly clownfish Nemo and his side-kick Dory, a blue tang fish, who you may know from the animated blockbusters Finding Nemo and Finding Dory.