Thanks GUPPIGETA. I wonder though.
I did some reading and looking at photos today and I think it may be a maasbanker. I thought at the time that it was too elongated and large for a gorrie. (That fish is more than 20cm in length.) Also, and I don't know if it makes a difference, but it was caught on a tiny piece of chokka on a size 10 Mustad baitkeeper hook. Lastly, the tail seems different from that of the pictures of gorries that I looked at.
On the other hand, I should mention that the three fish did make little grunting noises that I have read gorries make.