Finned Fish

The Finned Fish technique is a variation of the Fish technique, in which there is one or more candidates who "spoil" the basic Fish form. This technique allows for the elimination of candidates who would be eliminated by the Fish technique, but only those that would be eliminated if additional candidates had the given digit.

For N = 2 we have Finned X-Wing.
For N = 3 we have Finned Swordfish.
For N = 4 we have Finned Jellyfish.