Pinecone Fish - the weird fish under the blue ocean.

The Pinecone Fish also called the Pineapple Fish and Knight-fish is a small and unusual beryciform marine fish member of the family Monocentridae, of the Order Beryciformes, Class Actinopterygii. It is an unusual armored fish of the Indo-Pacific whose body has a vaguely pinecone pattern made by the joining of hard scutes, which provide protection to the fish from her enemies. There are four species of pinecone fish which are Monocentris japonica, Monocentris meozelanicus, Monocentris reedi, and Cleidopus gloriamaris.

A beautiful sea fish Pinecone Fish

It is 8-15 cm long (3-6 in), and is covered with spines, and has a brilliant yellow body somewhere it can be yellow to orange in color. It has what appears to be a glowing smile due to the bioluminescent bacteria which inhabit the light organs found on the sides of the mouth. All pinecone fish have phosphorescent organs at either side of the lower jaw that can turn off and on by movement of the jaw. It has a large, blunt head, and interestingly, its dorsal fin is not situated on the center of its back like that of most fish, but is off-center and the second dorsal and anal fins are at the rear of the animal, pointing backward.

This fish generally seeks shelter by day in caves, crevices and under overhangs. It lives in tropical and sub-tropical waters. The pinecone fish is popular in tropical aquariums due to its unusual appearance, but it is considered a difficult fish to keep.

Origin from Australia, Coral Sea but their distribution is limited to tropical and subtropical waters of the Indo-Pacific. 

Blonde Naso tang - a very personable pet aquarium fish.

The Blonde Naso tang, also known as the Elegant Tang , Naso lituratus, Clown tang, Redlip surgeonfish, Orange spine surgeonfish, Orangespine unicornfish, Barcheek unicornfish, Masked unicornfish, Poll unicornfish, Orange-spine unicornfish, Orangespine unicornfish, Pacific orangespine unicornfish, Striped unicornfish etc. The tang is from Acanthuridae family. It is a very personable pet fish. The fish is very much famous to the aquarium lovers and once it is comfortable it can even be trained to accept foods from its keeper's hand.

A beautiful Blonde Naso tang

At the maturity, the largest scientifically measured Naso tang was 46.0 cm /18 in. At the time of juvenile, the body is of a grayish brown shade and a prominent yellow line runs from the back of the mouth up to the eye. At maturity, the body takes on a darker bluish-gray tone and the juvenile striping is supplemented with additional color. The tail takes on a lyre shape and two yellow patches appear at the peduncle spines near the tail. A thin, black mask forms between the eyes and mouth, and the lips develop a yellow color.

A fantastic Naso lituratus

It is found among corals, rocks and rubble in lagoons and seaward reefs. The depth range for this amazingly beautiful sea species is about 0-90 meters / 0-295 feet. Juveniles prefer shallow rocky reefs and will sometimes form small aggregations together with other similarly sized members of the family Ancanthurus but the adults typically live in small groups and sometimes large aggregations also occur.  

Origin is from Maldives but the Naso lituratus is also found in the western and central Pacific Ocean, from Honshu in Japan to New Caledonia and Australia's Great Barrier Reef. Eastwards, its range proceeds to Hawaii, French Polynesia, and Pitcairn. 

Mantis shrimp – a colorful and fascinating sea creature.

Mantis shrimp or stomatopods are marine crustaceans and it is the members of the order Stomatopoda. The shrimp is a fascinating creature that has the ability to punch its prey into submission with a club that accelerates underwater at around 10,400 g. It is called "sea locusts" by ancient Assyrians, "prawn killers" in Australia and now it also referred as "thumb splitters" because of the animal's ability to inflict painful gashes if handled incautiously.

A delicious sea food made by Mantis shrimp

They may reach nearly 30 centimeters in length but in exceptional cases it has been recorded up to 38 centimeters. The carapace of mantis shrimp covers only the rear part of the head and the first four segments of the thorax. Mantis shrimp appear in a variety of colors, from shades of browns to bright neon colors. Mantis Shrimp are crustaceans that live in shallow waters and normally grow to about a foot long. More then 400 species of mantis shrimp have currently been described worldwide. They are commonly separated into two distinct groups (Spearers and Smashers) determined by the manner of claws.

Mantis shrimp - beautiful sea creature

The mantis shrimp has very powerful claws that they use to attack and kill prey by spearing, stunning, or dismemberment. Although it happens rarely, some larger species of mantis shrimp are capable of breaking through aquarium glass with a single strike from this weapon. The mantis shrimp uses its formidable weapon to break the shells of its prey but, until recently, it was unclear how its club could receive such a severe, repetitive pounding without suffering too much damage. The club, in fact, handles as many as fifty thousands strikes during its lifespan.

A appetizing chinese food made by Mantis shrimp

The mantis shrimp in Cuisine: In Japanese cuisine, the mantis shrimp is eaten boiled as a sushi topping, and occasionally, raw as sashimi. In Cantonese cuisine, the mantis shrimp is known as "pissing shrimp". In the Mediterranean countries the mantis shrimp Squilla mantis is common seafood, especially on the Adriatic coasts and the Gulf of Cadiz. In the Philippines it is cooked and eaten like shrimp like other shrimps and known as tatampal, hipong-dapa or alupihang-dagat.

Clown triggerfish - the most popular and colorful sea fish.

The Clown triggerfish is an eye-catching marine species and the most popular trigger species. It is also known as Clown Trigger, Big-spotted Triggerfish. It is found along the inner and outer portions of a reef in the wild, wherever shellfish and other invertebrates are found. The Scientific name of this beautiful sea creature is Balistoides conspicillum. It is the only triggerfish that has been bred in home aquariums. Maximum size of the fish can reach up to about 20 in / 50 cm in length.

It has a brown body and the ventral surface has large, white spots on a dark background, and its dorsal surface has black spots on yellow. The mouth is surrounded by a yellow field whit a white edge and may be used to deter potential predators. On its back the Clown triggerfish has a yellow to gold colored field and there is a vertical, white (slightly yellow) stripe on the caudal fin. The tailfin peduncle is sometimes, but not always, of the same yellow/gold color.

It has a dramatic coloration, which making this species a most sought after addition to the home aquarium. Among the most colorful, the Clown Triggerfish is also one of the most aggressive commonly kept inhabitants of an aquarium and it should never be kept with smaller fish or invertebrates. The fish are not reef safe and should not be kept in reef aquariums.

The Clown triggerfish originates from the Indo-Pacific coastal waters from 1-75 meters in depth. This fish is generally uncommon or rare throughout its range, which includes African east coast down to Durban, South Africa and eastwards to Samoa. They can be found as far north as Southern Japan and as far south as New Caledonia.

Blue - ringed octopus - the deadliest creatures under the blue ocean.

Residing in the Pacific Ocean anywhere from Japan to Australia, the blue-ringed octopus is a tiny and beautiful sea creature which is feeds off of small crabs, shrimp and wounded fish. 

Described by British zoologist Guy Coburn Robson in 1929, the blue-ringed octopuses (genus Hapalochlaena) are three or four octopus species that live in tide pools and coral reefs. At the size of a golf ball and having a yellowish/brown coloring, they are recognized as some of the world's most venomous marine animals.

Although small in size, it is easily able to camouflage itself into its surroundings and it has powerful enough venom to kill humans with just one bite and most attacks on humans occur only when the octopus has been picked out of its pool or stepped on. With no known antidote, this makes it the most toxic known sea creature. They can be recognized by their characteristic blue and black rings and yellowish skin. Normally, 50-60 blue rings cover the dorsal and lateral surfaces of the mantle. 

When agitated or provoked, blue rings or lines appear in the octopus, making it beautiful to look at but deadly to touch and the brown patches darken dramatically, and pulsate within the maculae.

Most of the tattoo lover believes that, octopus tattoo option is appreciate for their personality and in the 1983 James Bond film Octopussy, Bond is seduced by Magda, who has a blue-ringed octopus tattoo symbolizing her alliance with Octopussy's Octopus cult.

This deadly little sea creature abide in the Pacific and Indian Oceans, from Japan to Australia (mainly around southern New South Wales and South Australia).