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You are here: Home / Archives for ahi

Shibi Ahi – Kawakawa – Aku and Yellowfin – Big Eye taste comparison

April 6, 2022 By Scott 6 Comments

As someone new to catching and eating the various tuna available in Hawaii, I had many questions about fish identification and taste comparison, and asked our panel of experts who catch and eat a lot of these. Thank you Capt Darren, Capt Erik, Shea and Take’s Seafood.

Yellowfin
Big eye

Most of us less-exposed to the fish caught off local boats call any yellowfin tuna an “ahi”. It turns out that “ahi” refers to yellowfin and big eye tuna over 100lb. Fish under 100lb are called shibi. Big eye tuna are plumper, with larger eyes since they generally live in deeper, colder water, making them fattier and tastier than yellow fin. In fact, big eye is much preferred to yellow fin despite the flesh being not as firm as yellowfin ahi. Sashimi aficionados say big eye has a delicate sweet taste, and yellow fin can be slightly bitter.

Aku is skipjack tuna, the type of tuna most commonly canned. It has the most *flavor* of all the tunas, which some people love; others find the iron taste off putting. Otaru is the name for aku larger than say, 20lb, and some fish lovers say otaru makes the best tasting sashimi of all the tunas because of the high fat content. Otaru become less “irony” and more fatty as they get bigger. Aku can reach 40lbs here but most are 5 to 25lb.

Kawakawa is called bonita or mackerel tuna in other parts of the world. Similar in taste to aku, it too gets better tasting when it reaches 20lb or so. The state record is 33lb.

Aku and kawakawa don’t get a lot of respect from the non-local anglers and eaters because they are bloody tasting and soft if not handled properly and commonly used as bait on the mainland. Ideally they should be bled well after braining them, and iced on the boat and overnight before cleaning. That will result in firm filets that have a shelf life of 2 to 3 days. The larger fish are fattier because they need the fat stores to prepare to spawn. 20lb fish are 2/3 of their max weight. A 2/3 grown yellowfin tuna is close to 200lb!

Photo by Shea

Shibi Ahi have a much better rep than aku and kawakawa, but the guys who have eaten the 3 tunas say that small yellowfin are kind of bland and don’t begin to have more flavor until they pass the 50lb to 70lb mark. For guys not wanting that hint of iron though, shibi ahi is the best because of its mild taste. It’s definitely the brightest looking with its yellow stripe, fins, tail and blue/black contrast.

We kayakers don’t get a shot at big eye, and even aku are usually out of range. Kawakawa come in the closest and can be caught inside of 100ft. They also aren’t that wary of hooks, line and badly presented baits. Shibi ahi are in range of the kayaks, often caught from 120ft to 300ft, but are sharp eyed and rarely fall for a bait on wire leader.

Hope this clears up some confusion with the similar looking and often misrepresented Hawaii tunas. Please let me know if anything else should be added.

Holoholo: Our First Big Yellowfin Tunas

February 1, 2021 By Scott 3 Comments

Capt Erik and his dad Edwin continue to up their game. Just a few years ago they were new boat owners, now they’re on their new-to-them Boston Montauk chasing pelagics and dropping down on Deep 7.

Capt Erik: As usual, me and dad talked about what kind of fishing we wanted to do, the week leading up to the day I was free to fish on Sunday January 10th. Since we recently purchased two electric reels for bottom-fishing, I wanted to try and increase the odds of catching a nice bottom-fish by heading out to Penguin Banks and trying our luck there.  Continuing to watch the winds online while the week progressed, and realizing that my free time on my fishing day was getting shorter as we were packing the boat up the night before, I switched the plan and decided to stay at our local pier and just try trolling on our side.  Dad was pretty relieved to hear this because he just went bottom fishing on Thursday and Friday. 

We left the house at 5 AM, stopped at 7-Eleven to grab gas, food & ice and was in the water before six. There were a lot of boats at the pier staging to get ready and launch, but luckily with our small boat and simple set up we were able to avoid the mad rush and get out quick.

I had a plan in mind of the route I wanted to take and started my line from the head buoy. The sun started breaking the surface while we were about 4 miles offshore, the wind was low, the water surface had light texture and there were some long swells that were easy to handle.  The birds were just starting to wake up and move around and so we continued on our way dropping our Lures out right after the green flash. We had a Tsutomu 9″ bullet on the long center line (that I received while attending an Ahi course by Tsutomu), a 6″ Mark White smoker lure on the side and a 6″ chrome head lure rigged with flashabou by Derin Goya at First String Fishing (@firststringfishing) on the other.   

We didn’t see any birds that were working on our way to one of the fish aggregation devices, but did see someone jigging at the FAD. We decided to pull the lines up and try jigging since we saw that boat pull in a small shibi (5-10lbs?).  Dad dropped his jig on his electric reel down deep and I stayed up high since we couldn’t see any fish on the fish finder and wanted to work all columns.  After three drops and coming up with nothing and watching the other boat make three drops and coming up with zero as well, I looked around and saw there were birds now working the surface of the water approximately 500 yards from us.

We brought the lines up quickly and sped to the bird pile.  As soon as we got to the birds, I dropped my jig down and held my rod as I drove.  Dad put out a 5″ pink squid lure on his electric reel.  I slow down to about 5 to 7 knots and was able to hook an aku, about 7lbs.  We brought the aku in and bled it while trying to stay with the birds.  We continued to work the birds but about six more boats joined in and it became hectic to maneuver.  We couldn’t get another bite for ~10 minutes and watched as the other boats were successful in picking up smaller tunas about 10 pounds. We decided to leave that area and continue on the path I had routed and planned in my head.  


The path I made up was based on our previous trips in December where we saw lots of birds. Shortly after leaving the birds where the other boats were, I saw bigger sized skipjack tunas jumping in front of us and birds that were sitting down on the water and would fly over when they seen the fish jumping. I was able to observe some flying fish scatter at the top of the water very close and made a small turn towards it.  Right after I turned the Mark White lure line started peeling out.  The fish gave a little fight and then started surfboarding on the surface. The fish hooked itself in a way where it pulled the gills, bled out, then came up dead.  It was a good sized Aku about 15 pounds.  While bleeding the fish we made a big rookie mistake 🙁 We left the lines in the water and our leader line with the chrome head got caught around the prop and stopped it. It took us about 15 minutes to cut the leader line free from the propeller and then I circled back to where we caught the fish. I didn’t see any other fish jumping and while circling around again to make another pass in the area I could see a huge pile of birds very far off in the distance. When I troll with dad I’m usually always driving while dad sets lines watches the Lures and controls the lines according to which Direction we need to move in.  We work well together this way because my eyes are better at seeing the birds and dad doesn’t get seasick while not looking into the horizon (looking down at lures, tying down poles etc).

The bird pile I’m seeing way off in the distance is free of any boats and the birds are very actively working the surface, diving as well as flying high to move and dive. I instruct dad to pull up the centerline and watch the lines as I speed to get to the pile. Before we get to the pile, dad puts out the third line. I look at the GPS and realize that the spot we are in is the exact spot that I wanted to go to. It was a destination we had marked the month before when we took a double strike but couldn’t land either fish. About 3 to 4 minutes into working the pile I see the first fish jump out of the water!! It was a yellow fin tuna that I guessed about 60 pounds. I told dad “we are not leaving this pile. I don’t care if we don’t catch anything today I want to work this pile because I can see what kind of fish there are. “

We continue following the birds and I continue to see the fish jumping out of the water and now my heart is racing. We circle once within 1/4 mile of where we started and then get back down to the bottom where we started our circle when we finally hear it. . . Our 14/O Penn senator real starts peeling line end drag is screaming.  It took the Tsutomu 9″. Trying to remain calm we pull up the other lines and prepare ourselves. I had a good idea of what was on the line because I’ve seen the fish jumping around but decide to keep the boat moving instead of stopping and fighting it up and down like you normally would a tuna.  Once the deck was clear, dad takes the wheel and I take the rod and reel at the back.  I work line slowly back into the reel but we have a lot of line out at this point (100 yards?). I realize that if at some point we do get the fish boat side that someone will have to leader the fish up.  I asked dad to hand me my gloves get the gaff’s ready and the bat for dispatching.  Dad takes the rod and reel for a second while I put the gloves on in anticipation of leadering and tells me “we forgot the bat.”  I jump back on the reel and now the fish is close. I get the first glance and my adrenaline goes even higher. Neither of us have ever seen a fish like this before while on a boat.  I told my dad when i saw it “Big Fu$*!n Yellow!”


I grab the leader line and start working the fish toward us as it circles its way boatside trying to make sure I guiding it to Dad standing to my left. Once it’s in reach of dad ‘s gaff he sinks it in. The fish still had a little life left and frenetically kicked at the surface, dousing us with water and splashing dad’s hat to the side, blocking his sight. Dad holds the gaff with one hand, quickly tossed his hat off with the other and I reach over and grab a meat hook. As quick as I can I put it in the fish’s mouth and yank. We hoist the fish up over the rail and hear a thud of the fish hit the floor of the boat.  A huge relief overcomes the both of us as we realize one of our long-time fishing goals was just achieved. 

As we sit there physically tired and emotionally relieved, I tell my dad what my wife, Jessica told me the night before. I always ask my wife what kind of fish she wants to eat to try and see if I we can fill her request (in hopes that if we do then happy wife happy life:).  She has called two out of the last two fish that we caught when she has asked (she asked for shibi the first time and mahi the second time and got both).  The night before she asked for an Ahi for spicy poke.  I responded and said I think I can get you poke, probably got small shibi.  She said back to me “no I want ahi.”  I explain to her that that may be a tall order based on the season but we’d try.  I guess I’m not the only one who gives her what she wants. haha.  Mahalo ke Akua!  Thanks be to God!

I spike the fish’s brain, gilled and gutted the fish to honor it, and keep the meat as best as we can and we realize there was no way it was fitting in our cooler.  We grab the fish bag and transfer the ice from the cooler into the fish bag and maneuver the fish into it. After cleaning up the deck a little bit we decided to try for another one since the fish were still around jumping and we were still the only ones at the pile. At this point the weather had turned from a calm light wind day to now the front of the rain, so the air was chilly and the rain was toward land and blocking all view of land and blocking view of the pile from other boaters? The first long line went out with the Tsutomu again and shortly after the Mark White lure went out, we heard that beautiful sound once again but this time on the 12/O.  We knew to fight it up and down now.

It was dad ‘s turn to fight the fish and I was glad that I could film him. I took charge of the GoPro cameras while dad took charge of the rod and reel. I was amazed to watch him fight this fish because typically he’s so anxious when there’s a good fish that dad ends up horsing the fishing and sometimes pops the fish off. He took his time and methodically got the fish up crank by crank. Maybe it had something to do with the fact that we already had one in the cooler? I saw it was getting close to leader as my GoPro was underwater filming the fish come up.  I put the GoPro down and grab the leader line. This fish was swimming in a clockwise direction while circling up, opposite of the first.  Upon its fourth circle I could see it was going toward the propeller and feel it was stronger than the first fish. Our motor was still on and propeller was still in the water and the fish must’ve gotten spooked by the movement or sound because it took off on its second run. I let go of the leader line and let it do its thing.  Dad kind of laughed at the situation and took his spot at the reel again after putting the gaff down. Once again, he got it up to the surface and by this time once I grab the leader I could kind of tell that it was tired.  In fact, it looked as if it was defeated because on its last circle because it went straight for dad’s gaff and he was able to sink it in perfectly. It gave no fight and I reached for the second gaff and we lifted it slowly in. This time the feeling was more of a validation . . . A feeling of “ok, maybe we might know a little about what we’re doing.”  Opportunity met preparation this day.  

We knew it was our time and very lucky and blessed to have the two fish already in the boat so after quickly joking about going for more we took our time to properly gill and gut the second fish, ice it down, clean the deck and head in. 



When we got to the pier, we realize there’s no way we’re taking the fish bag out without pulling the fish out individually to properly wash boat and also knew that we really needed more ice for the fish. Instead of washing down at the pier (which was already full of boats anyway) we got ice and headed straight home. 

We don’t have a big fish scale so we weighed the two fish by standing on a normal scale, then with the fish and subtracting.  The weight of both gilled and gutted fishes came out to 72 and 74lbs. We took some pictures with the family and my friend Kelly came to help cut one of the fish in the early evening. 

We shared the fish with friends and family and kept replaying the events in our head.  You never forget your first and now we truly know what the feeling of “Ahi Fever” is like.  

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