what is a eel?

True eels (Anguilliformes) are an order of fish, which consists of 4 suborders, 19 families, 110 genera and 400 species. Most eels are predators.
The flat and transparent larva of the eel is called a leptocephalus. A young eel is called an elver.
Most eels prefer to dwell in shallow waters or hide at the bottom layer of the ocean, sometimes in holes. These holes are called eel pits. Only the Anguillidae family comes to fresh water to dwell there (not to breed). Some eels dwell in deep water (in case of family Synaphobranchidae, this comes to a depth of 4,000 m), or are active swimmers (the family Nemichthyidae - to the depth of 500 m).

where are sea turtles found from?

turtles found in all the world's oceans except the Arctic Ocean

how do jelly fish swim?

Jellies swim by jet propulsion. The jelly will expand then quickly contract its bell-shaped body, which forces water away from the bell and pushes the jelly in the opposite direction.

have sharks got bones?

Yes sharks do have bones but it has a speacil name:carclige. thats the speacil name for a shark bone.

what is a hagfish?

a hagfish is a fish that is a fish that looks like a worm but it is much more bigger then a worm.

it has no eyes but parts off its body around the head and the cloaca can detect the presence of

light.

how do puffer fish puff up?

some puffer fish can swell up to 4 times there normal size by swallowing warter in sac in there bellies.

FOOD & FEEDING clown fish
The clownfish has a symbiotic, or mutually beneficial, relationship with the sea anemone. It catches most of its food by cooperating with its host anemone. The clownfish will leave the safety of the anemone's tentacles and swim out among the nearby reef. Its brilliant colors attract larger fish, who, lured by the thought of a meal, follow it back to the anemone and are stung by the anemone one's tentacles. The anemone then consumes the fish, and the clownfish feeds on the remains.
In addition to other fish, the clownfish also feeds on planktonic crustaceans and algae that live in or grow on the reef. The clownfish also eats away debris and nibbles off the dead tentacles of its host anemone.
CLOWNFISH & MAN
Far too small to be hunted by man for food, clownfish have lived undisturbed in the coral reefs for thousands of years. But more recently, they have become extremely popular as saltwater aquarium fish. The brightly colored species command a high price in europe and the united states. Collectors, realizing the demand, have destroyed many reefs in search of prime specimens, often damaging or killing the host anemones in the process.
Fortunately, many local governements have imposed restrictions on the number of the clownfish that can be taken from their habitats and the means by which they can be taken. And, because clownfish are a big attraction with snorkelers and scuba divers, the tourist industry has an interest in protecting them and ensuring that they be allowed to live and breed safely on the reefs.
KEY FACTS
Sizes
Length:2-5 in., according to species
Breeding
Spawning season:Year round in tropical waters.
Eggs:Laid in large batches.
Hatching time:4-5 days.
Lifestyle
Habits: Usually live in pairs within an anemone.
Diet: Leftovers from fish consumed by anemone; algae.
Lifespan: 3-5 years in captivity.
Related species
Clownfish belong to the same family of damselfish. They include the common A. percula, the two-banded A. akindynos, the black A. melannopus, the black-banded A. ephippus, the white-maned A. periderain, and the red sea variety A. bicinctus.this information was posted by clown fish.

Sharks are fish. However, they do not have bones like other fish. Their skeleton is made of cartilage. This is the same bendable material that is in your ears!
They also do not have a swim bladder, the air filled balloon-like organ that keeps most fish upright.
Sharks have gill slits but no gill-cover, which is common to most bony fish. Because they have no swim bladder to keep them buoyant, sharks sink when not swimming. Shark's bodies are heavier than water and most sharks are constantly on the move. By moving forward with their mouths open,sharks move water across their gills for breathing. The larger species produce live young that arefully formed, miniature versions of their parents. Mother sharks offer no food or protection for theiryoung. Young sharks do have a fighting chance, though, as they are born with a full set of teeth and the ability to swim

Swordfish (Xiphias gladius):
Broadbill swordfish are blackish-brown on the upper body, fading to light brown on the belly, deep azure blue to bright metallic purple on the back when alive. The eyes are very large and black. Their fins are brown or blackish-brown. Their upper jaw extends into a long bill which has a flattened oval cross section. The bill is approximately one third of the fish's total length. Adults have no teeth or scales and they have a large keel on each side of the body in front of the tail The dorsal fins are broadly separated and there are no pelvic fins.
It grows to over 4.5 metres and over 600kg.
Broadbill swordfish are oceanic fish distributed through tropical and temperate waters of the Pacific, Indian and Atlantic oceans between 45ºN and 45ºS. They inhabit all Australian waters beyond the edge of the continental shelf.
Broadbill swordfish tolerate a broad range of water temperatures from 5-27ºC, but normally inhabit waters with surface temperatures greater than 13ºC.
The distribution of larval broadbill swordfish in the Pacific Ocean indicates that spawning occurs mainly in waters with a temperature of 24ºC or more. Spawning appears to occur in all seasons in equatorial waters, but is restricted to spring and summer at higher latitudes. In Australian waters larvae are common in spring in the Coral Sea. Broadbill swordfish with mature ovaries have also been caught in this area in October.
It is a highly prized commercial food fish with pink flesh, and an exciting, challenging sport fish.
Broadbill swordfish are rarely taken on rod and reel in Australia. It is slightly more common in New Zealand, but still and extremely noteworthy and prestigious catch.
The best method for taking broadbill in Australia, appears to involve the use of whole, fresh squid and chemical light sticks fished 40-100 metres (20-50 fathoms) below the surface far offshore at night.
SWORDFISH RECIPES
[Main Australian Fish & Seafood Page]
this information is posted from swordfish phatos and information

HagfishHagfish, also referred to as blind eels, are found only in marine environments and feed mainly on dead fish. Despite being nearly blind, hagfish easily find food with their keenly developed sense of smell and touch. They have no jaws but with their rasping tongues, they burrow into carcasses and feed from within. Hagfishes have a skull of cartilage but lack jaws. They also lack vertebrae but have a notochord, which they retain in adulthood as a strong, flexible rod of cartilage. Hagfish give off large amounts of slime possibly to repulse other scavengers or to deter a potential predator. They are an unusual “fish” (disputed if fish) as they are hermaphrodites. They produce only sperm or eggs at any one season, but they can produce sperm one year and eggs the next.
No jaws
No complete eyes
No true stomach, and skin respiration in addition to gills
Marine scavengers
Capable of producing large amounts of mucus or slime
Spawn repeatedly throughout their lives and produce few large eggs each time
Bind, toothless ammocoete larvae typically burrow in the bed of silty streams
Many adults are parasitic on other vertebrates
Eel-like body without scales and without paired fins
No dorsal fin, only a confluent caudal fin this information was posted by diffrent type off fish.