Fish in the Sea of Galilee

Fish, and fishing, in the Sea of Galilee (aka the Lake Galilee, and other names) are mentioned a few times in the Gospels.

What is the Sea of Galilee like? What kind of fish live there?

The Wikipedia says that the Sea of Galilee is the lowest freshwater lake in the world, that is, that it is further below sea level than any other lake on earth. The reason it is so low is that it is in a rift valley, where two of the earth's tectonic plates, the African and Asian Plates, are pulling apart.

The most ready sources that I found (here and here) say that there have been about 18 species of indigenous fish in the Sea, and that there are three main types of edible fish. These are tilapia (locally called musht), three species of carp, and sardines. A cichlid type of fish has apparently gone extinct, due to habitat loss.

We cannot be sure as to what fish Peter and his companions caught, when Jesus told them to cast in their nets (when they hadn't caught anything all night -- Luke 5:6-9), what kind of fish Jesus was preparing on the shore after His resurrection (John 21:9), or what kind of fish the boy with five loaves and two fish had with him (Matthew 14:17-19).

Thanks for reading!