Tropical fish

Many fish live in warm water.

They often have very bright colors. Some live in the ocean. Some live in fresh water.

You can keep them in a tank at home. Most people keep fish from fresh water. These fish can be cheap to buy. Ocean fish can be hard to keep alive. Many ocean fish live in coral reefs. These reefs are homes for many fish. They are very beautiful to see.

Tropical fish live in warm water around the world.

People often keep them in tanks called aquariums. Many fish have bright colors. These colors come from special cells. Some cells have pigment. Other cells are iridescent, which means they shine.

Most people keep freshwater fish. These fish are often cheap to buy. Many come from fish farms in Asia or Florida. Some fish are harder to breed. People must catch these fish in the wild. This makes them cost more. Some expensive fish are arowanas.

Other people keep saltwater fish. These fish usually come from coral reefs. They have very vivid colors and patterns. It can be hard to keep them alive. This is because you must add sea salt to the water. You also must watch the salt levels. Water can evaporate and change the salt.

Coral reefs are very special. They cover less than 1% of the ocean. Yet, they are home to 25% of all marine fish. Many fish hide in the reefs to stay safe. Today, pollution and overfishing threaten these reefs.

Tropical fish live in warm water environments around the world.

People often keep these fish in heated tanks called aquariums. The name "tropical fish" is not a scientific group. Instead, it is a general term for fish from these warm areas. Many people enjoy them because of their bright colors. These colors come from pigmented cells and iridescent cells. Iridescent cells are those that shine or shimmer.

Keeping these fish involves different ways of working with water. Freshwater fish are very common in aquariums. Most people use tap water to make a freshwater home. Saltwater fish are harder to keep in tanks. You must add sea salt to fresh water to make it right. You must also monitor the salt levels closely. This is because water can evaporate over time. When water evaporates, the salt levels can change.

Many fish come from farms rather than the wild. Most tropical fish sold today are freshwater species. Large fish farms in Asia and Florida produce many of them. These warm places make it easy to grow fish for sale. This mass production makes many fish quite inexpensive. Some special fish are still caught in the wild. These fish are often more expensive to buy. Arowanas and flowerhorn cichlids are some very expensive freshwater fish.

Marine fish often come from coral reefs around the world. Most of these fish are sourced from the wild. This is because few marine species breed well in captivity. Marine fish have very vivid colors and patterns. They can be harder to keep alive than freshwater fish. However, new filtration technology is helping people keep them. More people are now learning how to care for them. This is helping the popularity of marine fish grow.

Coral reefs are amazing places in the ocean. They cover less than 1% of the ocean surface. Yet, they provide a home for 25% of all marine fish. These reefs are very different from the open ocean. Hundreds of species live in small areas of a healthy reef. Many fish use camouflage to hide in the coral. Sadly, pollution and overfishing now threaten these habitats. Protecting these reefs helps the fish that live there.

Tropical fish are animals that live in warm aquatic environments across the globe. It is important to note that "tropical fish" is not a formal taxonomic group. In science, a taxonomic group is a specific way to classify living things based on their relationships. Instead, the term is a general description for fish found in these warm waters. This term is most often used by people who keep fish in heated aquariums. Many people enjoy these fish because of their striking and bright appearances. These colors often come from two different types of cells. Some fish have pigmented cells that provide color. Others have iridescent cells, which are cells that shimmer or shine.

Fishkeepers must manage two different types of water environments: freshwater and saltwater. Freshwater tropical fish are the most common choice for aquariums. This is because freshwater is easy to find through sources like tap water. Saltwater environments are more difficult to recreate for a home aquarium. To make saltwater, people must add sea salt to fresh water. This process requires constant monitoring of the salinity, or the salt concentration. This is necessary because water evaporates over time. When water evaporates, the salt stays behind and the concentration changes. Freshwater tanks are simpler to maintain because you can just top them up with fresh water.

There are several ways that tropical fish enter the aquarium hobby. Many fish are wild-caught specimens taken directly from their natural homes. Others are born in captivity through controlled breeding. Some fish are even hybrids, which are offspring resulting from two different species. In captivity, humans have selectively bred certain lines for special physical features. This might include fish with very long fins or specific colors like albino. Many freshwater species are produced on a large scale by fish farms. These farms are often located in Asia and Florida. The warm climates in these regions make commercial production more viable. This mass production allows many fish to be sold at an inexpensive price.

Freshwater fish are generally the most popular group for hobbyists. They are often easy to keep and cost very little money. However, some species remain more expensive because they are difficult to breed in captivity. These specific fish must still be sourced from the wild. Among the most expensive freshwater species are arowanas and flowerhorn cichlids. Interestingly, some male flowerhorn cichlids are actually sterile. This happens because of many different cross-breedings between species.

Marine fish, or saltwater tropical fish, offer a different experience for aquarists. Most marine fish are currently sourced from the wild. This is because only a few marine species can be bred in captivity with any regularity. Because they are harder to keep alive, marine fish are often less popular than freshwater fish. However, they are still very popular due to their vivid colors and patterns. They also display unique behaviors that attract many observers. The popularity of marine fish is gradually rising. This growth is due to better filtration technology and more knowledge about their care. More species are also becoming available through aquarium breeding.

Many marine tropical fish live in close relation to coral reefs. These reefs are complex ecosystems that support tremendous biodiversity. In a healthy reef, hundreds of different species can exist in a very small area. Many of these fish have developed ingenious specializations to survive. Some use camouflage to hide within the reef structures. Other fish are highly visible and stand out among the ocean inhabitants. Recreational scuba divers often keep lists of the many fish species they observe while diving in these tropical environments.

Coral reefs are incredibly important to the health of the ocean. Although they occupy less than 1% of the surface area of the world's oceans, they are vital. These small areas provide a home for 25% of all marine fish species. This is a sharp contrast to the open water habitats. The open water makes up the other 99% of the world's oceans. Unfortunately, these essential habitats are currently facing many threats. Loss and degradation of coral reef habitats are major concerns. Increasing pollution and overfishing also put these systems at risk. Some fishing involves destructive practices that damage the reef itself. These factors threaten the survival of both the reefs and the fish that rely on them.