I put in Allomycterus jaculiferus which is the one for NZ (Sea Fishes of NZ pg 131) and it changed to the above one and looking on the taxon page Allomycterus jaculiferus is crossed out .... so is this one that is not listed or one that has changed?

The last line for the entry in the book says The porcupine fish is widespread around the coasts and is restricted to NZ.

The WoRMS for Allomycterus jaculiferus says
Status Unaccepted: (Subsequent combination)
Accepted nameTragulichthys jaculiferus (Cuvier, 1818)

http://www.marinespecies.org/aphia.php?p=taxdetails&id=343710