Select the one animal that has all of the fish traits listed above.
Green frogs have moist skin. Green frog tadpoles hatch from eggs without shells and live underwater. The adult frogs live on land near ponds and rivers. They may jump into the water to hide from predators. Minnows live underwater and have fins to help them swim. They have scaly skin and lay eggs with no shells. Many fishermen use minnows as bait to catch other fish.
Fish are a group of animals with similar traits. The following traits can be used to identify fish:
They have fins, not limbs.
They make eggs with no shells. Observe the animals and read the descriptions.
Scientists sort animals with similar traits into groups. This is called classification. Classification helps scientists learn about how animals live.
How do scientists classify animals? First, they make observations about an animal. Scientists observe the animal's traits, including its body parts and behavior. Then, scientists compare the animal's traits to other animals' traits. Scientists classify animals with similar traits into a group.
To decide if an animal is part of a group, look at the traits of the group.
Fish have the following traits:
They have fins, not limbs.
They make eggs with no shells.
Compare each animal's traits to the group's traits. Select the animal with traits similar to the group's traits.
A green frog has the following traits:
It spends part of its life in water and part on land.
It has moist skin.
It makes eggs with no shells.
A green frog does not have all of the traits of a fish. A green frog is an amphibian.
A minnow has the following traits:
It has fins, not limbs.
It makes eggs with no shells.
A minnow has the traits of a fish. A minnow is a fish.