Currently it is possible to connect to a svn repository using the svn+ssh:// protocol.

We need doco for this.

+++++++++++++
You first need to confirm what type of authentication method (username/password or private key) is used by the "svn+ssh" server.
If it uses username and password then you set it up as normal.
If the SVN server uses private key as its authentication method and your Fisheye instance uses SVNKit to connect to SVN repository, you may want to follow through the following documentation in order to enable the svn+ssh to authenticate with private key:

• SVN+SSH authentication with private key.

Essentially, svnkit.ssh2.key properties is only needed when the ssh key is already uploaded to server for authentication (no username and password given).

In that case, you need to use the following system properties to let SVNKit know about your private key and passphrase:

svnkit.ssh2.key = /path/to/private/key/file 
svnkit.ssh2.username = userName  
svnkit.ssh2.passphrase = optionalPassphrase 
svnkit.ssh2.password = userpassword
svnkit.ssh2.port = optionalPort

You can do that by setting FISHEYE_OPTS environment variable:

export FISHEYE_OPTS="-Dsvnkit.ssh2.key=/path/to/private/key/file -Dsvnkit.ssh2.username=userName -Dsvnkit.ssh2.passphrase=optionalPassphrase -Dsvnkit.ssh2.password=userpassword -Dsvnkit.ssh2.port=optionalPort"

+++++++++++++

Need to check with someone from development if this is all that is needed. I got the following info from past support cases