Fish are everywhere—from colorful aquarium fish to large ocean predators and familiar seafood. But how many fish names can you actually recognize in English?
Learning fish vocabulary is a simple way to build your English word bank, especially if you're learning animal names, food vocabulary, or everyday English. Some names, such as goldfish and shark, are very familiar, while others may be new to you.
In this guide, you'll learn 20 types of fish in English, with clear pictures, simple descriptions, and useful facts. It's designed to make each name easier to understand and remember.
Let's start with the first fish and see what makes each one different.
What Is a Fish?
A fish is an animal that lives in water and is specially adapted for swimming. Most fish breathe through gills and use fins to move, steer, and balance.
Fish come in many shapes, sizes, and colors. A tiny guppy, a colorful clownfish, and a powerful shark may look very different, but they are all adapted to life in water.
In this guide, you'll learn the names and simple facts about 20 types of fish in English.
20 Types of Fish in English
1. Goldfish
Goldfish are small freshwater fish commonly kept as pets. They come in different colors, shapes, and sizes.
Fun fact: Goldfish are members of the carp family.
2. Koi
Koi are colorful freshwater fish often kept in outdoor ponds. They are known for their beautiful patterns and bright colors.
Fun fact: Koi are a domesticated variety of carp.
3. Clownfish
Clownfish are small, brightly colored marine fish famous for living among sea anemones.
Fun fact: Their orange-and-white stripes make them easy to recognize.
4. Guppy
Guppies are tiny freshwater fish popular in home aquariums. They are especially known for the colorful tails of many males.
Fun fact: Guppies give birth to live young rather than laying eggs.
5. Betta
Betta fish are small freshwater fish with flowing fins and striking colors. They are popular aquarium fish.
Fun fact: Male bettas are often territorial toward other males.
6. Tuna
Tuna are powerful ocean fish with streamlined bodies built for swimming. Several tuna species are important food fish.
Fun fact: Some tuna can maintain body temperatures above the surrounding water.
7. Salmon
Salmon are well-known fish that spend part of their lives in the ocean and, in many species, return to freshwater to reproduce.
Fun fact: Salmon are famous for their long migrations.
8. Catfish
Catfish are freshwater and marine fish recognized by the whisker-like barbels around their mouths.
Fun fact: These barbels help catfish detect food and their surroundings.
9. Shark
Sharks are marine fish with strong bodies and cartilage instead of bones. They range from small species to enormous whale sharks.
Fun fact: The whale shark is the largest known fish.
10. Swordfish
Swordfish are large ocean fish with a long, pointed bill resembling a sword. They are fast and powerful swimmers.
Fun fact: Their pointed bill helps them strike prey.
11. Seahorse
Seahorses are small marine fish with upright bodies, curled tails, and horse-like heads.
Fun fact: In seahorses, the male carries the developing young.
Seahorses are small marine fish with upright bodies, curled tails, and horse-like heads.
Fun fact: In seahorses, the male carries the developing young.
12. Pufferfish
Pufferfish are marine or freshwater fish that can inflate their bodies when threatened.
Fun fact: Many pufferfish species contain powerful toxins.
Pufferfish are marine or freshwater fish that can inflate their bodies when threatened.
Fun fact: Many pufferfish species contain powerful toxins.
13. Blue Tang
Blue tangs are colorful marine fish with bright blue bodies and distinctive markings. They are commonly associated with coral reefs.
Fun fact: They have sharp spines near their tails that can help protect them from predators.
Blue tangs are colorful marine fish with bright blue bodies and distinctive markings. They are commonly associated with coral reefs.
Fun fact: They have sharp spines near their tails that can help protect them from predators.
14. Angelfish
Angelfish are attractive fish with tall, flattened bodies and flowing fins. Both freshwater and marine species are popular aquarium fish.
Fun fact: Freshwater angelfish belong to the cichlid family.
Angelfish are attractive fish with tall, flattened bodies and flowing fins. Both freshwater and marine species are popular aquarium fish.
Fun fact: Freshwater angelfish belong to the cichlid family.
15. Mackerel
Mackerel are streamlined marine fish that often swim together in schools. They are also widely eaten as food fish.
Fun fact: Many mackerel have blue-green backs with dark patterns.
Mackerel are streamlined marine fish that often swim together in schools. They are also widely eaten as food fish.
Fun fact: Many mackerel have blue-green backs with dark patterns.
16. Sardine
Sardines are small, silvery fish that often swim together in large schools. They are commonly used as food.
Fun fact: Swimming in large groups can help sardines avoid predators.
Sardines are small, silvery fish that often swim together in large schools. They are commonly used as food.
Fun fact: Swimming in large groups can help sardines avoid predators.
17. Stingray
Stingrays are flat, cartilaginous fish with broad bodies and long tails. Many species live on or near the seafloor.
Fun fact: Some stingrays have a venomous spine on their tail for defense.
Stingrays are flat, cartilaginous fish with broad bodies and long tails. Many species live on or near the seafloor.
Fun fact: Some stingrays have a venomous spine on their tail for defense.
18. Tilapia
Tilapia are freshwater fish widely raised for food. They are especially common in warm-water environments.
Fun fact: Tilapia are among the most widely farmed freshwater fish.
Tilapia are freshwater fish widely raised for food. They are especially common in warm-water environments.
Fun fact: Tilapia are among the most widely farmed freshwater fish.
19. Barracuda
Barracudas are long, powerful marine fish with sharp teeth. They are fast predators found mainly in warm and tropical waters.
Fun fact: Their streamlined bodies help them make quick bursts of speed.
Barracudas are long, powerful marine fish with sharp teeth. They are fast predators found mainly in warm and tropical waters.
Fun fact: Their streamlined bodies help them make quick bursts of speed.
20. Rockfish
Rockfish is a common name for several species of marine fish, many of which live around rocky habitats.
Fun fact: Rockfish species can differ greatly in size, shape, and color.
Quick Comparison Table
Fish Water Type Easy to Recognize For Goldfish Freshwater Bright colors Koi Freshwater Colorful patterns Clownfish Saltwater Orange-and-white stripes Guppy Freshwater Colorful tail Betta Freshwater Flowing fins Tuna Saltwater Streamlined body Salmon Freshwater & Saltwater Long migration Catfish Freshwater & Saltwater Whisker-like barbels Shark Saltwater Cartilaginous body Swordfish Saltwater Long pointed bill Seahorse Saltwater Horse-like head Pufferfish Freshwater & Saltwater Inflating body Blue Tang Saltwater Bright blue body Angelfish Freshwater & Saltwater Tall, flattened body Mackerel Saltwater Dark body patterns Sardine Saltwater Silvery body Stingray Saltwater Flat body Tilapia Freshwater Common food fish Barracuda Saltwater Sharp teeth Rockfish Saltwater Rocky habitats
Rockfish is a common name for several species of marine fish, many of which live around rocky habitats.
Fun fact: Rockfish species can differ greatly in size, shape, and color.
Quick Comparison Table
| Fish | Water Type | Easy to Recognize For |
|---|---|---|
| Goldfish | Freshwater | Bright colors |
| Koi | Freshwater | Colorful patterns |
| Clownfish | Saltwater | Orange-and-white stripes |
| Guppy | Freshwater | Colorful tail |
| Betta | Freshwater | Flowing fins |
| Tuna | Saltwater | Streamlined body |
| Salmon | Freshwater & Saltwater | Long migration |
| Catfish | Freshwater & Saltwater | Whisker-like barbels |
| Shark | Saltwater | Cartilaginous body |
| Swordfish | Saltwater | Long pointed bill |
| Seahorse | Saltwater | Horse-like head |
| Pufferfish | Freshwater & Saltwater | Inflating body |
| Blue Tang | Saltwater | Bright blue body |
| Angelfish | Freshwater & Saltwater | Tall, flattened body |
| Mackerel | Saltwater | Dark body patterns |
| Sardine | Saltwater | Silvery body |
| Stingray | Saltwater | Flat body |
| Tilapia | Freshwater | Common food fish |
| Barracuda | Saltwater | Sharp teeth |
| Rockfish | Saltwater | Rocky habitats |
Frequently Asked Questions
1. What are some common fish names in English?
Some common fish names include goldfish, koi, clownfish, guppy, tuna, salmon, shark, and catfish.
Some common fish names include goldfish, koi, clownfish, guppy, tuna, salmon, shark, and catfish.
2. What is the difference between freshwater and saltwater fish?
Freshwater fish live mainly in rivers, lakes, and ponds, while saltwater fish live mainly in seas and oceans.
Freshwater fish live mainly in rivers, lakes, and ponds, while saltwater fish live mainly in seas and oceans.
3. Is a seahorse a fish?
Yes. A seahorse is a type of fish, even though its body shape looks very different from most fish.
Yes. A seahorse is a type of fish, even though its body shape looks very different from most fish.
4. Is a shark a fish?
Yes. Sharks are fish. Their skeletons are made of cartilage rather than bone.
Yes. Sharks are fish. Their skeletons are made of cartilage rather than bone.
5. Is a jellyfish a fish?
No. Despite its name, a jellyfish is not a fish. It belongs to a different group of aquatic animals.
No. Despite its name, a jellyfish is not a fish. It belongs to a different group of aquatic animals.
Conclusion
Learning fish names becomes much easier when you connect each word with its appearance and a simple fact. From goldfish and koi to sharks, seahorses, and stingrays, these 20 names give you a useful starting point for building your English vocabulary.
Try reviewing the list again and naming each fish from its picture. A little practice can make these words much easier to remember and use in everyday English.
Learning fish names becomes much easier when you connect each word with its appearance and a simple fact. From goldfish and koi to sharks, seahorses, and stingrays, these 20 names give you a useful starting point for building your English vocabulary.
Try reviewing the list again and naming each fish from its picture. A little practice can make these words much easier to remember and use in everyday English.
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