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.
Gulper eels look like eels in many ways but are not 'true eels'.
2 - slithery 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
3048.
Approximately 200 types
Approximately zero appendages.
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.
Henry I died from eating an excess of eels, which were a delicacy at the time.
Adult eels are called eels, babies are elvers
in eels