Answer:Eel Explanation: eels are the only chose that don’t have bones and are with a snake-like shape.
Is eel a fish or snake?
Eels are actually fish (albeit typically longer) and are flatter than snakes. As marine animals and unlike reptiles, eels breathe underwater with their gills and fins, and therefore cannot survive outside of water.
Which fish looks like snake?
Scientists have discovered a new species of swamp eel in northeastern India called Monopterus rongsaw. Swamp eels belong to the family Synbrachidae, a family of unique bony fishes that lack eyes, fins and ribs and sport an elongated body.
Are eels Scaleless?
Snake eels (family Ophichthidae) Snake eels can be distinguished by the finless pointed tail that projects beyond the dorsal and anal fins. They are mostly small sand-burrowing species of no commercial significance. els are long-bodied, snake-like fishes that are usually scaleless and lack pelvic fins.
How do fish scales protect bony fish?
A fish scale is a small rigid plate that grows out of the skin of a fish. The skin of most fishes is covered with these protective scales, which can also provide effective camouflage through the use of reflection and colouration , as well as possible hydrodynamic advantages.
Is a fish with snake-like body small fins and slimy skin?
An eel is a long, thin fish that looks like a snake.
What does eels look like?
Eels may look like a snakes , but they are actually fish. ... Even though the eel looks like a snake it is really a fish. They have long, narrow bodies with long dorsal and anal fins. Most eels have no scales.
Are eels just long fish?
Eels are elongated fish , ranging in length from 5 cm (2 in) in the one-jawed eel (Monognathus ahlstromi) to 4 m (13 ft) in the slender giant moray. Adults range in weight from 30 g (1 oz) to well over 25 kg (55 lb). They possess no pelvic fins, and many species also lack pectoral fins.
Is eel a fish or mammal?
Although eels look like snakes, they are fish and belong to the order Anguilliformes, of which there are about 800 species. The term “eel” is also used for some other similarly shaped fish, such as electric eels and spiny eels, but these are not members of the Anguilliformes order.
Are fish and snakes related?
However, fish scales and reptile scales are not homologous — meaning that they do not arise from the same embryonic tissues. Fish have scales that arise from dermal — bony — tissue and have a somewhat similar composition to bone. ... These scales form from the epidermis, somewhat like those of snakes and lizards do.
What body shape does an eel have?
An eel is distinguished externally from most other fishes by its elongated body , which is seldom laterally compressed. A continuous dorsal, anal, and caudal fin runs around the tail tip; pelvic fins are always absent; and gill openings are usually reduced. The body covering is usually scaleless.
How do eels have babies?
The females release their eggs , the males fertilise them, and the adults die after spawning. The eggs hatch into larvae that float to the surface and drift back towards New Zealand. They may take about 17 months to arrive. ... Over a decade (or more) later, adult eels head out to sea to spawn, and the cycle continues.
Are all catfish Scaleless?
Scaleless fish include, but are not limited to , corydoras cat fish and all other catfish, knife fish, eels and ropefish, Certain eels and ropefish, may be salt tolerant to a degree due to naturally occurring in brackish water, but will prove intolerant to medication.
What are 3 characteristics of bony fish?
Bony fishes share several distinguishing features: a skeleton of bone, scales, paired fins, one pair of gill openings, jaws, and paired nostrils . Osteichthyes includes the largest number of living species of all scientific classes of vertebrates, more than 28,000 species.
What type of scales do bony fish have?
Most bony fishes have cycloid or ctenoid scales . Both cycloid and ctenoid scales consist of an outer layer of calcium and an inner layer of connective tissue.
Why do fish differ in body shape?
2. Body Shape: Fish tend to have body shapes that are most suited for where they live and feed . Each shape is advantageous for a different lifestyle. ... Fish with this body shape are well adapted for feeding and survival in open water because the fusiform shape creates minimal drag as the fish swims through the water.
