Question

Give the salient features of class Pisces

Answer 1

they r cold blooded.
they have two chambered heart.
they have Gill for respiration.
they have fins.
development is direct.
etc.etc.

Answer 2

$\Large{\boxed{\sf\:{The\;main\;feature\;of\;Pisces\;are :-}}}$

1. They are animals live solely in water, which include the fish.

2. Their skin is coated in sheets / scales.

3. Use gills they get oxygen dissolved in water.

4. Their body is streamlined, with the use of a muscle tail for movement.

5. They are bloodied cold and only have two chambers in their hearts.

6. They're laying eggs.

7. Some species of fish have skeletons consisting of both bone cartilage.