Classification of Fish
Fish can be classified into two based on
- habitat and
- morphology (structure).
Classification of Fish based on Habitat
1. Fresh water fish: These are fish that can successfully live and reproduce only in salt free water such as ponds, lakes, streams, rivers, swamps etc. Examples of fresh water fish are tilapia, cat fish, Nile perch, mud fish, dogfish, moon fish, etc.

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