Trick is to bleed them as they come off the hook, like shad, and keep the fish cool or preferably on ice. I made some seared steaks and sashimi for mates this weekend who said it was the best tuna they had ever had.. Granted I know its not as good as yellowfin, but they have never had fish as fresh and properly looked after post-harvest and that makes ALL the difference, it was better than all the yellowfin both had eaten before..same shark bait haha
Otherwise smoke that baby, you won't be sorry..
Thanks for the correction Aqua, checked some pics, it looks like the oriental for sure..Here's a quote from an auz site..
"THESE little speedsters draw light spinning enthusiasts from far and wide when they are sighted in Perth waters. Crashing across the surface, bonito, like all small tunas, are fast and voracious feeders.
More accurately called oriental bonito, they are mostly referred to simply as bonito in WA....
A frequently overlooked fact with bonito is that they are pretty good eating if bled straight away and put on ice. The flesh is nowhere near as red as you might expect and it cooks up well."
If not bled immediatly and kept cool/cold, the flesh goes too pap..and then best on the slow braai or curry or as sharkbait. Go get some more, they are around for now! Also the fish have come into the bays to spawn and feed up on mullet, baby shad, anchovies etc. so if you get females that are fat with roe when you clean them, keep the roe and fry it up at home in butter, salt and spice and spread it on your toast. It is very rich but is amazing in flavour, if you like roe/caviar. This was shown to me by my east African friend where these fish are a staple in the diet. Their usual dish with it is a spicy coconut, fish and rice curry so you were not too far off haha!