We do not know as eels do not leave good fossils. Also your English is a bit wrong your question should be worded "How many extinct eels were there". This is because if they are extinct they would have lived in the past not the present.
There are about 600 types of eels in the world. Eels are of the order of Osteichthies, or fish, and are comprised of 16 families of eels. It is noteworthy that the electric eel is not actually a true eel.
There are about 800 species of eels.
Some common names are:
freshwater eels
false morays
mud eels
spaghetti eels
moray eels
thin eels
worm eels
congers
long neck eels
pike congers
duckbill eels
snake eels
snipe eels
sawtooth eels
cutthroat eels
about 800 species
Eels are an order of fish which consists of four suborders, 20 families, 111 genera and approximately 800 species
Approximately, 10 in every minute
alot
There are about 3,000 eels in the world
Gulper eels look like eels in many ways but are not 'true eels'.
The phrase "slithery eels" has three stressed syllables: "slith," "er," and "eels."
The types of eels are salt water eels, freshwater eels, the swamp eels, rubber eels and the electric eels. It is an elongated fish that lives in the shallow waters.
There are many different kinds of freshwater eels, and they are from many different parts of the world.
400,000 eels to power a truck for 12 seconds
Approximately 200 types
Approximately zero appendages.
3048.
There are many different groups of eels, with different scientific names. The most accurate answer is that the true eels are referred to as Anguilliformes.
Adult eels are called eels, babies are elvers
Henry I died from eating an excess of eels, which were a delicacy at the time.