Question

Give any six characteristics of super class Pisces.

Answer 1

Characteristics of Pisces:

1. Pisces are classified into three categories: Placodermi (Aphstohyoids), Chondrichthyes, Osteichthyes.
2. These are only aquatic creatures.
3. Scales and plates cover their flesh.
4. They use their gills to absorb oxygen dissolved in water.
5. The body is either sleek or spindly in form.
6. It is possible for the tail to be homocercal or heterocercal.
7. The muscular tail is utilized to propel the animal forward.
8. Pisces are divided into three groups: Placodermi (Aphstohyoids), Chondrichthyes, and Osteichthyes.

1. Placodermi: Placoderm, any member of an ancient group of primitive jawed fishes known exclusively through fossil remnants (Placodermi). Example: Dunkleosteus.
2. Chondrichthyes: Chondrichthyes is a fish class that comprises those having a cartilaginous skeleton. Examples: Sharks, skates, rays, and chimaeras.
3. Osteichthyes: Osteichthyes is a fish class that comprises those having a bony skeleton. Examples: Sunfish, bass, catfish, trout, and pike.