Others have mentioned some of the fish below, but I recommend the following fish for sashimi:
- Kingfish
- Snapper
- Squid
- Trevally
- Flathead (very thinly sliced, eaten with ponzu sauce)
- Leatherjacket (prepared same as flathead)
- Yellowtail (the large ones, don't bother with the small ones cos they are too chewy)
- Slimy Mackeral (must be very fresh, otherwise the fishy smell gets too strong)
- Bonito (same as slimy mackeral)
- Whiting (slice thin and use the larger ones, otherwise it can get chewy)
Most fish you catch can be prepared into sashimi, but some don't taste that good. Any of the ones listed above are very nice to eat raw.
I recommend bleeding the fish straight away and then putting on ice for a few hours before eating. But I have been known to eat Yellowtail and Slimys almost immediately after catching them on the wharf!