Ok, so if you've been looking into ghoti it should be fairly obvious how most of this works, but for those who haven't been looking at generic fish support for one too many hours: I got you.
The basic combo goes: make arianpos (level 6 synchro), use its effect to banish shif (the one that has navi from zelda inside it). Next turn (the opponents turn) you can make Askaan (the level 8 synchro) with arianpos and shif. If you had a zepp (the red one) in grave you can banish it with arianpos and have it come back to make the deep beyond (the level 10 synchro) for a board clear, but that's highly unlikely. thats the basic combo in a nutshell.
Now to explain the rest of the cards in the deck:
Supay duskwalker special summons a supay from deck, which makes you a level 6 synchro (all without a normal summon mind you)
sniopsis is run at one pretty much only to (A) keep you from bricking and (B) banish a ton to power up the deep beyond
If you banish anything you get ixeep for free (who when banished can cycle a ghoti spell/trap away from banished). You can see why that's good
White stingray is an anti brick level 4 special summon in a deck that uses level 2 tuners to make level 6 synchros
if you have minairuka, it will be on the field by the end of the turn and it threatens negate
we're on 3 shifter 1 crow for hand traps because our bosses do a lot of the negating and removal
in terms of spell traps we're on ghoti stuff as well as some good one of's
Time to talk about weird combos:
If it looks like you bricked chances are you drew one of two hands: duskwalker, minstrel, a ghoti tuner, another monster, and one rando, OR beautunaful princess and 4 randos. Fortunately for you, those are some of the best hands in the deck.
in the duskwalker hand you need to special duskwalker and the supay from deck (in defense), normal the ghoti tuner, discard deep sea minstrel and banish whatever monster you want from opponent (they'll get it back later so it doesn't matter). Go into deep sea prima donna using the ghot tuner and duskwalker and activate its effect to unbanish the minstrel target and special a beautunaful princess (DO NOT ACTIVATE IT'S EFFECT) from deck to go into the level 8 ghoti.
From Beautunaful Princess, go into buzzsaw shark, activate its effect targeting itself and special out either a stingray if you think you can bring it back to the field later or a leaffish if you don't and make bahamut shark. detach the stingray or leafish and go into toadally awesome. Keep in mind you are locked into xyz for the rest of your turn though.
I think that's everything from the main deck? Time for extra deck!
We're on two of every ghoti except the spear because it sucks.
bahamut shark and toadally awesome for that combo.
Prima donna for her combo.
brionac might be a good option specifically going second in a hand where you'll have like exactly leaffish left in hand
White aura whale is a faster board clear if you'd rather get that then a level 8 ghoti
the adamancipator
the icejade is there if you'd rather a negate then a board clear
the swordsoul is there because it works absurdly well as the equivalent of accescode in a link deck
thats about it, happy dueling
-ornge