Approximately zero appendages.
Yes.
appendages are how many body parts do they have
moths have 5 million appendages
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.
6
None
Six.
6
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 many different kinds of freshwater eels, and they are from many different parts of the world.