Sea Angling Ireland - Boat & Shore Tactics, Irish Record and Specimen sizes http://www.sea-angling-ireland.org/shark%20-%20lsd.htm
More information on the status, distribution, rigs and techniques http://britishseafishing.co.uk/dogfish/
The scientific bit from Wikipedia https://en.wikipedia.org/wiki/Small-spotted_catshark
The lines from the nostrils on the dogfish, unlike the Huss, go all the way to the mouth.