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HomeHomework HelpbiologyTypes of Fish

Types of Fish

Fish are a diverse group of aquatic vertebrates characterized by gills, fins, and a streamlined body, classified into three main categories: jawless fish (e.g., lampreys and hagfish), cartilaginous fish (e.g., sharks and rays), which have a skeleton made of cartilage, and bony fish (e.g., salmon and trout), which possess a skeleton composed of bone. Each group exhibits distinct anatomical and physiological adaptations suited to their environments.

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Biology
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Overview

Fish are a diverse group of aquatic animals that play vital roles in ecosystems around the world. They are classified into three main categories: jawless, cartilaginous, and bony fish, each with unique characteristics and adaptations. Understanding these differences is essential for appreciating the...

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Key Terms

Jawless Fish
Fish that lack jaws, such as lampreys and hagfish.

Example: Lampreys attach to other fish to feed on their blood.

Cartilaginous Fish
Fish with skeletons made of cartilage, including sharks and rays.

Example: Sharks have a flexible body structure that aids in swimming.

Bony Fish
Fish with skeletons made of bone, such as trout and goldfish.

Example: Goldfish are popular pets and are known for their bright colors.

Ecosystem
A community of living organisms and their environment interacting as a system.

Example: Coral reefs are rich ecosystems that support diverse fish species.

Aquaculture
The farming of fish and other aquatic organisms for food.

Example: Salmon farming is a common practice in aquaculture.

Overfishing
Catching fish at a rate faster than they can reproduce.

Example: Overfishing has led to the decline of many fish populations.

Related Topics

Aquatic Ecosystems
Study of the interactions between aquatic organisms and their environment.
intermediate
Marine Biology
Exploration of ocean life, including fish, mammals, and ecosystems.
advanced
Environmental Science
Understanding the impact of human activities on the environment, including aquatic habitats.
intermediate

Key Concepts

Jawless FishCartilaginous FishBony FishFish Anatomy