The one-fourth part of the Earth is covered with water. This is the only reason; it referred to as the blue planet and the Pale Blue Dot. Water is one of the harshest habitats on the Earth. There are more than 230,000 aquatic species are recorded. Fish is one of the species of water.
Fishes are gill-bearing aquatic craniate animals that lacked by the limbs with digits. They are cold-blooded except one species of fish, i.e. Opah is a warm-blooded. They use acoustic sound as a means of communication among themselves, which used in the context of feeding, aggression or courtship behaviour. There are 1173 fish species are listed in the IUCN Red list because they threaten and on way of extinction.
Importance of fish to human
1. Economic importance: It is used as a food source. It is a good source of protein and omega-3. Therefore, fishing is one of the fastest growing occupations which can be seen in the modern method of Industrial fishing.
2. Culture: The symbolic theme of fish is significant to many religions. For Example- In ancient Mesopotamia, fish was considered as the god of water. Fish was sacred in Babylonian culture. Matsya is the fish avatar in the ten primary avatars of a Hindu god.
Top 10 Fastest Fish in the World
Cheetah is the fastest animal on the land. The Ruppell’s Griffon Vulture is the highest flying birds. Let’s see top 10 fastest fish in the world in terms of swimming speed.
10. Flying fish
Scientific name: Atheriniformes
Swimming speed: 50 km/h to 56 km/h
Inhabited region: Subtropical waters of the Atlantic and Pacific
9. Swordfish
Scientific name: Xiphias gladius
Swimming speed: 55 km/h to 64 km/h
Inhabited region: Tropical and temperate parts of the Atlantic, Pacific, and Indian Oceans
8. Bonefish
Scientific name: Albula vulpes
Swimming speed: 60 km/h to 69 km/h
Inhabited region: Tropical water
7. Blue shark
Scientific name: Prionace glauca
Swimming speed: 59 km/h to 69 km/h
Inhabited region: Temperate and tropical oceans
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6. Atlantic bluefin tuna
Scientific name: Thunnus thynnus
Swimming speed: 60 km/h to 70 km/h
Inhabited region: Western and eastern Atlantic Ocean, Mediterranean Sea
5. Mako shark
Scientific name: Isurus oxyrinchus
Swimming speed: 60 km/h to 74 km/h
Inhabited region: Tropical to temperate waters worldwide
4. Wahoo
Scientific name: Acanthocybium solandri
Swimming speed: 60km/h to 78 km/h
Inhabited region: Tropical and sub-tropical waters around the world
Top 10 largest Marine Protected Area
3. Striped marlin
Scientific name: Kajikia audax
Swimming speed: 60 km/h to 80km/h
Inhabited region: Tropical and temperate regions of Indo-Pacific Ocean
2. Sailfish
Scientific name: Istiophorus
Swimming speed: 100 km/h to 110km/h
Inhabited region: Indian and Pacific Oceans
1. Black marlin
Scientific name: Istiompax indica
Swimming speed: 105 km/h to 129 km/h
Inhabited region: Australian coast and tropical Indo-Pacific
Top 10 Fastest Fish in the World
| Name of fish | Description |
| 1. Black marlin | Scientific name: Istiompax indica Swimming speed: 105 km/h to 129 km/h Inhabited region: Australian coast and tropical Indo-Pacific |
| 2. Sailfish | Scientific name: Istiophorus Swimming speed: 100 km/h to 110km/h Inhabited region: Indian and Pacific Oceans |
| 3. Striped marlin | Scientific name: Kajikia audax Swimming speed: 60 km/h to 80km/h Inhabited region: Tropical and temperate regions of Indo-Pacific Ocean |
| 4. Wahoo | Scientific name: Acanthocybium solandri Swimming speed: 60km/h to 78 km/h Inhabited region: Tropical and sub-tropical waters around the world |
| 5. Mako shark | Scientific name: Isurus oxyrinchus Swimming speed: 60 km/h to 74 km/h Inhabited region: Tropical to temperate waters worldwide |
| 6. Atlantic bluefin tuna | Scientific name: Thunnus thynnus Swimming speed: 60 km/h to 70 km/h Inhabited region: western and eastern Atlantic Ocean, Mediterranean Sea |
| 7. Blue shark | Scientific name: Prionace glauca Swimming speed: 59 km/h to 69 km/h Inhabited region: Temperate and tropical oceans |
| 8. Bonefish | Scientific name: Albula vulpes Swimming speed: 60 km/h to 69 km/h Inhabited region: Tropical water |
| 9. Swordfish | Scientific name: Xiphias gladius Swimming speed: 55 km/h to 64 km/h Inhabited region: Tropical and temperate parts of the Atlantic, Pacific, and Indian Oceans |
| 10. Flying fish | Scientific name: Atheriniformes Swimming speed: 50 km/h to 56 km/h Inhabited region: Subtropical waters of the Atlantic and Pacific |
Top 10 Longest Fish Species in the World