Gar

Natural Wild Life | Gar | In American English the name gar (or garpike) is strictly applied to members of the Lepisosteidae, a family including seven living species of fish in two genera that inhabit fresh, brackish, and occasionally marine, waters of eastern North America, Central America, and the Caribbean islands. Despite their similar appearance, the gar is not to be confused with the marine garfish or needlefish that is a common sight throughout the tropical reefs of south-east Asia. There are seven different species of gar found on the American continent where they can be found in fresh or brackish water habitats such as lakes and reservoirs, and in the larger slow-moving rivers.

The gar is a generally quite large species of fish, with some individuals able to reach lengths of 3 meters or more. Although not all gar species are quite so big, they are all generally large fish and therefore dominant predators within their environments. Gar are generally slow-moving fish and so must rely on the power and strength of their jaws in order to catch their prey. Gar have a long jaw which is filled with sharp, needle-like teeth and can often be seen together in small groups as they try to ambush their prey as one.

The gar is a carnivorous and dominant predator within its environment feeding only on other animals in the water. Gar primarily hunt fish, insects and other invertebrates such as crabs along with eggs and other animals in the water. Due to its large size and aggressive temperament, the gar has few natural predators within its native environment. Larger animals including crocodiles, alligators, large fish species and humans are the main predators of the gar.

Many gar spawn during the warmer spring months between April and June although they have been known to mate until the autumn weather appears in early October. After mating, the female gar lays an average on 10 sticky eggs on a nearby leaf or branch, where they remain until they hatch. As with many other fish species, the gar parents do not look after their young once they have hatched. Today, the gar is not considered to be a species that is under threat from extinction although gar populations have been decreasing in specific areas mainly due to over-hunting and pollution in the water.

Lionfish

Natural Wild Life | Lionfish | The lionfish (also known as the turkeyfish, tigerfish, dragonfish, scorpionfish, and butterfly cod) is a poisonous spiky fish found in the warmer waters of the western and central Pacific Ocean. The lionfish is a predatory fish hunting small fish, but it's venom is capable of being fatal to larger creatures. The lionfish is a popular aquarium fish around the world, although the lionfish is better kept in tanks with lots of space and few other fish. The lionfish can live to around 16 years in the wild and lionfish often live longer if looked after well in captivity.

There are around 8 different recognised species of lionfish that are found in the Pacific Ocean. The lionfish is natively found in coastal waters around rocky crevices and coral reefs where there are lots of smaller fish for the lionfish to eat and also places for the lionfish to hide. The lionfish catches it's prey by hiding in a crevice in the rock or coral and then ambushing it as it swims past.The lionfish then corners it's prey with it's large fins before swallowing it whole. Lionfish prey on a wide variety of small fish and crustaceans that inhabit the tropical reefs. The lionfish is prey to few predators due to the large size of the lionfish and the fact that the appearance of the lionfish is intimating to other animals.

The spikes that protrude from the body of the lionfish contain venom that lionfish uses to defend itself if it is being pursued. The main predators of the lionfish are large fish, eels and humans that catch the lionfish to put into a tank. Although the lionfish is a solitary animal and they only really come together to mate, a few lionfish inhabit a certain area of the reef. The lionfish group usually contains one male lionfish and a few female lionfish that he mates with. The male lionfish is highly territorial and protects the area in which by himself and his females live.

The female lionfish releases between 2,000 and 15,000 eggs into the water which are fertilised by the male lionfish. The lionfish pair then quickly hide so that their eggs can float into the ocean before being spotted by predators that eat the eggs. The lionfish eggs hatch in just 2 days and the tiny lionfish fry remain near the surface of the water until they are bigger. When the lionfish fry reach nearly an inch in length, they swim down into the ocean to join the reef community.

The Lionfish is also an invasive species, originally from the Indian and Western Pacific oceans. It was brought into Florida as an aquarium fish, and after a hurricane broke some of the aquariums containing the fish, they started to appear around the lower coast of Florida. They have now spread all the way up to Long Island, New York. When scientists do dives to study the lionfish, sometimes they kill one, and trace it's DNA. The odd thing lately, is that all the fish trace back to an original six or seven Lionfish from the ocean in which they came.

Piranha

Natural Wild Life | Piranha | The piranha is a type of freshwater fish found in the rivers of the South American jungles. The piranha can be found in nearly every country in South America and the piranha have been appearing more recently in the south of the USA. The piranha fish has a single row of razor-sharp teeth with the piranha being most commonly known for their taste for blood. The piranha feeds on fish, mammals and birds alike, with the wholes group of piranhas feeding together in a slight frenzy. Despite the carnivorous nature of the piranha, the piranha is actually an omnivore and will eat almost anything that it can find. Piranhas mainly feed on fish, snails, insects and aquatic plants occasionally eating larger mammals and birds that fall into the water.

Despite it's feared nature, the piranha actually has a number of predators in the wild, including humans that hunt the piranha for food. Piranhas are preyed upon by large predators such as river dolphins (known as botos), crocodiles, turtles, birds and larger fish. The piranha is generally around 30cm long but some piranha individuals have been found measuring nearly 80cm. The piranha is said to be more feared by many humans than even a shark. Piranhas are generally found in fast flowing rivers and streams where there is plenty of food for the piranha to eat. The piranhas lives together in large shoals and constantly compete for food. Feeding frenzies will be triggered when there is a shortage of food or blood in the water.

Piranhas tend to breed in pairs in slower water such as lagoons generally during the rainy season around April to May. The mating pair prepare a nest that the female piranha lays clusters of eggs in. The female piranha lays an average of 5,000 eggs and due to the fact that the male piranha and the female piranha defend their protected eggs so effectively, more than 90% often survive and hatch after just a few days. In August 2009 a 35cm piranha was found in a river in Devon, thousands of miles from it's native home. The team that discovered the piranha were utterly bewildered as to what this tropical fish was going in a river in England but later deduced that this piranha must have been kept as a pet and then released due to the fact that it was eating sweetcorn.

Natural Wild Life | Molly | The molly is a small-sized tropical fish that is found naturally in the warm and peaceful rivers of Central America. Today, mollies are extremely popular fish to be kept in the community of an artificial aquarium, all around the world. Mollies are known for their calm and peaceful nature, which along with their brightly coloured bodies, makes them a particular popular choice for freshwater tanks of all shapes and sizes. The male mollies are more slender than the female mollies and have a slightly longer tail fin, making the two sexes easy to tell apart.

Mollies live amongst the plants in a group containing numerous molly individuals, known as a school. Although this works well for the mollies in the wild, the fast-paced breeding of these molly groups can quickly become a problem in artificial tanks. Mollies are omnivorous animals and therefore have diet that is comprised of both plant and animal matter. Mollies primarily eat small invertebrates including insects and bloodworm, along with algae and food particles in the water.

Due to their small size, mollies have numerous natural predators within their environment, with larger fish being the most common predators of the molly. Aquatic birds and even reptiles are also known to hunt them. Unlike many other species of tropical fish, female mollies give birth to live young rather than laying eggs which are very likely to be eaten. Mollies can give birth to up to 100 fry at once, only a couple of weeks after fertilisation occurred.

Wrasse

Natural Wild Life | Wrasse | The wrasse is a typically small species of fish, found in the coastal waters of the world's major oceans. The Cleaner wrasse is the most commonly known wrasse species as it is often seen alongside other marine animals, including sharks. There are more than 500 different species of Wrasse found in the shallower coastal waters and coral reefs, of the Pacific, Indian and Atlantic oceans. Wrasse most commonly inhabit areas that have an abundance of both food and places to hide, making coral reefs and rocky shores the perfect home for the wrasse.

Cleaner wrasse are the most well-known wrasse species as they are often seen going into the mouths of large marine animals in order remove the dead material inside. Cleaner wrasse feed on dead tissues, scales and parasites that lurk inside the mouth of the larger animal, and few are actually eaten by the predator that they are assisting. Wrasse come in a variety of colours and sizes depending on the species of wrasse. Wrasse tend to be relatively small in size, with many species of wrasse being less than 20 cm in length. One species of wrasse however is enormous in comparison, growing to more than 2 meters long.

Wrasse are carnivorous animals that have thick lips with a row of teeth that usually face outwards. The mouth of the wrasse is protractile which means that it is capable of extending forwards. Wrasse feeds on a number of small invertebrates, small fish and food particles in the water. Wrasse are also known to follow large predatory fish, eating the trail of left-overs that it leaves behind it. Due to their small size, wrasse have numerous predators in their natural environment including larger fish, such as lionfish, dogfish and barracuda and wrasse are even eaten by some smaller species of shark. Wrasse are known to live for a relatively long-time particularly for their small size. Wrasse mate by releasing their eggs and sperm in to the water, which are fertilised and become part of the plankton until they are big enough to join the reef. Female wrasse lay thousands of eggs at at time so the wrasse population numbers are relatively high.

Zebra Shark

Natural Wild Life | Zebra Shark | The zebra shark is a medium-sized species of shark, that is found in the warmer coastal waters and around tropical coral reefs. Zebra sharks are most commonly found in the Indian and South Pacific oceans. Zebra sharks can grow to nearly 3 meters in length and can get to be 30 years old in the wild. Zebra sharks that are kept in captivity generally do not exceed 15 years of age. Zebra sharks can be identified by the yellow spots that are present on the back of the zebra shark.

Zebra sharks have a long, flattened body which helps them to remain unnoticed on the seabed. The zebra shark also has a long tail which allows it to be more agile in the water. Zebra sharks move their tails from side to side when they swim, in an eel-like manner. Zebra sharks are omnivorous animals but tend to have a more meat-based diet. Zebra sharks feed on small fish, crabs, shrimp, snails and other small invertebrates along with squid and sea snakes which they forage for in the coral reefs.

Due to their relatively large size, zebra sharks have few natural predators as they are fairly dominant predators in their environment. Larger species of shark such as tiger sharks and bull sharks are the main predators of the zebra shark, along with humans who hunt them for their meat and fins. The female zebra shark lays an average of ten large eggs which hatch after an incubation period of around 5 months. The baby zebra sharks are nearly half a meter long when they first hatch.

Hammerhead Shark

Natural Wild Life | Hammerhead Shark | Hammerhead Sharks are appropriately named after their flat shaped heads. Hammerhead sharks are large carnivorous fish that prey on large fish and occasionally hammerhead sharks will hunt small water mammals. Hammerhead sharks are found in the warmer waters of oceans worldwide but hammerhead sharks are particularly found in coastal waters, and along continental shelves. The shallow waters that the hammerhead sharks inhabit allow the hammerhead shark to hunt prey more easily. There are 9 different species of hammerhead shark worldwide, ranging from 3ft to 20ft in length! Hammerhead sharks are not commonly known to attack humans but can be aggressive if a human came into contact with a hammerhead shark.

The flat shaped head of the hammerhead shark is thought to allow the hammerhead shark to detect prey more easily, as it increases the hammerhead sharks sensitivity to sonar activity. Hammerhead sharks are thought to use sonar waves detection in a similar way to their five main senses, so its like the hammerhead shark has a sixth sense. The shape of the head of the hammerhead shark is made up of two projections on either side of the face of the hammerhead shark, which gives the hammerhead shark the head shape that resembles a hammer almost rectangular in shape. The eyes and nostrils of the hammerhead shark are found at the ends of the hammer allowing the hammerhead shark to have better vision and smell of the surrounding water.

Like many other species of shark the hammerhead shark is a solitary hunter during the night, but during the daytime hammerhead sharks are known to form schools of up to 100 hammerhead shark individuals. Hammerhead sharks are commonly seen in larger groups during the summer months when the hammerhead sharks are migrating together in search of cooler waters. The great hammerhead shark is the largest species of hammerhead shark and one of the few species of hammerhead shark that is potentially dangerous to humans. This is due to the sheer size of the giant hammerhead shark and also because the giant hammerhead is known to have an aggressive temperament. Other species of hammerhead shark tend to pose little or no threat to humans as these species of hammerhead shark are generally much smaller than the giant hammerhead shark and are slightly calmer in their nature.

Barracuda

Natural Wild Life | Barracuda | The barracuda is a large species of fish found in the warmer, coastal regions of the world's oceans. There are more than 20 different species of barracuda that range in size from less than 50cm to nearly 2 meters in length. The barracuda is widely spread across the oceans but is more commonly found in the more tropical regions where there is an abundance of food. Although barracudas can be found in the deep ocean, they tend to prefer coastal habitats along continental shelves and close to coral reefs.

Despite the difference in size and colour between barracuda species, all species of barracuda have a similar elongated appearance, and pointed head with powerful jaws, containing rows of sharp fang-like teeth used for eating larger prey. The barracuda is known to be an aggressive and dominant predator, often relying on the surprise tactic in order to catch it's prey. Barracudas are also able to swim at over 40 km/h in short bursts which they do to overtake prey that may be trying to swim away. The barracuda is an opportunistic predator, feeding only on other animals in the surrounding water. The carnivorous barracuda primarily feeds on smaller species of fish, marine invertebrates, crustaceans and squid, which the barracuda usually ambushes with tremendous power.

Due to the fact that barracudas can grow into very large sized fish, the barracuda has few natural predators in the ocean besides sharks and killer whales. Humans are also one of the barracuda's main predators as they are hunted and eaten all around the world. Although little is really known about the reproduction of the barracuda, female barracuda are known to spawn during the spring. The female barracuda releases her eggs into the water which are then fertilised externally. As with many fish species, once spawned, the barracuda mother has no interest in caring for her young. Today, due to it's aggressive nature, the barracuda is one of the most dominant predators within it's coastal environments and has even been known to act aggressively towards humans diving or snorkelling in the water.

Tang

Natural Wild Life | Tang | The tang is a small to medium sized fish that is found in the warmer coastal waters of the tropics. Tangs are well know for their bright colours and are closely related to surgeon fish and unicorn fish. There are 80 known species of tang, that inhabit the tropical waters of the southern hemisphere, including the largest species of the tang group, the white margin unicorn fish that has been known to grow over a meter long.

Tang are found around shallow coral reefs where there is an abundance of food and plenty of places to hide from approaching predators. The tang is named after the razor-sharp scalpel (also known as tang) at the base of their tails. When the tang feels threatened, it hides in a crevice in the coral or rocks and anchors itself in using this scalpel. The scalpel at the base of the tang's tail can also be used to defend itself if it is caught. Although the tang is an omnivorous animal, it has a predominantly vegetarian diet. Tang mainly feed on algae and other plants around the coral reefs as well as picking the larger food particles out of the plankton in the water. Later species of tang also feed on small invertebrates and fish. Due to the tang's love of algae, tang can often be seen with sea turtles as they swim along with them cleaning the algae off their shells.

Due to it's small size, the tang has many predators in it's shallow ocean environment including larger fish, eels, sharks, crustaceans and large invertebrates such as jellyfish. Tang are also preyed upon by human who mainly catch them to keep in artificial aquariums. Tangs are known to breed all year round in the tropical regions, beginning with a male tang securing himself a temporary breeding territory that includes a pair or group of female tang. The female tang release an average of 40,000 eggs into the water which are then fertilised by the male tang. The baby tang are known as fry and hatch in less than a week. Tangs however are reported to breed as well when in captivity.

The tang is one of the most popular species of marine fish to be kept in tanks and aquariums around the world. People are charmed by the peaceful and gentle nature of the tang, along with it's bright colours and the fact that tangs can live for a long time (average is between 12 and 15 years), especially compared to other species of marine fish of a similar size. Tang are not recommended to be kept in small aquariums as tang have the potential to get pretty big. The most common type of tang kept in salt-water aquariums are the yellow tang and the bright blue regal tang but despite the fact that the tang is popular fish to keep they need to be well looked after and have specific water conditions maintained.

Tetra

Natural Wild Life | Tetra | The tetra is a small and colourful fish native to the freshwater rivers and streams of South America and Africa. The tetra is one of the most well known and popular freshwater tropical fish kept in tanks and aquariums all around the world. There are around 150 known species of the tetra fish native to the clearwater streams and slow-moving rivers of both Africa South America. There are more than 100 different species of the tetra in Africa alone and even more in South America. The two groups of fish are classified as the characidaes (the tetra of South America) and the alestiidaes (the tetra of Africa).

Tetras are very commonly found in aquariums around the world and due to the hardiness of the tetra, they are easy fish to keep. The neon tetra is among the most commonly bred commercial species of tetra out of all of the tetra species. The tetra is an omnivorous animal eating a mixture of both plant and animal matter. The tetra primarily feeds on algae and brine shrimp and picks out the larger food particles that are part of the plankton in the water. Tetras also eat small invertebrates such as worms. Due to their small size, tetras are prey to many predators in their watery world. Larger fish, eels, crustaceans and invertebrates all prey on the tiny tetra which is often easy to spot due to it's brightly coloured body. When a tetra feels it is in in danger, it will often try to find something to hide in or travel into water that is slightly darker so that the tetra is harder to spot.

Tetras live in schools of many tetra individuals, sometimes in the hundreds, in order to help to protect each other and to find food. Tetras kept in tanks should be kept with at least 6 or 7 other tetras. Male tetras tend to be smaller in size than the female tetras. Tetras breed in pairs that spawn together for about a year. Female tetras lay an average of 130 eggs usually on a leaf in the water, which are then fertilised by the male tetra. The baby tetra are called fry and hatch within a couple of days.