Hi, Grayewick the Fusionist here, with a Synchro Deck... YEP
Presenting Ghoti. Why? Because it's just like Crystrons fr fr but with fishes and easier maths. Anyway, there's really nothing much to talk about this list since it's for the most part a standard Ghoti deck with standard Ghoti ratios, but with a few notable exceptions.
Main Deck, except "Ghoti" cards
• x3 Supay, Duskwalker + x1 Supay - It's a free Arionpos, Serpent of the Ghoti engine. Yep.
• x3 Minairuka - It's a free negate that Special Summons itself when the effect of a WATER monster is activated... which majority of your monsters are.
• x3 Lifeless Leaffish - Just an Armageddon Knight for Fishes. Best Normal Summon because of how unassuming its effect is.
• x3 Beautunaful Princess - Second best Normal Summon because of how it dodges targeting negations. You're going with Lifeless Leaffish or Paces, Light of the Ghoti with this card anyway so, you know... yeah.
• x3 Hop Ear Squadron - One of the enablers of funny Synchros.
The rest is just a bunch of staples.
Extra Deck
• x2 Ghoti of the Deep Beyond - I play 2 because sometimes I need the extra copy.
• x2 Askaan, the Bicorned Ghoti - I play 2 because you play 2 in Ghotis.
• x2 Arionpos, Serpent of the Ghoti - I play 2 because you don't need 3 of it. You could, though, if you have it and and extra space.
• x1 Guoglim, Spear of the Ghoti - I only play this because I have the slot for it, and because it's a D.D. Warrior Lady. You don't need it, but can have it.
• x1 Assault Blackwing - Onimaru the Divine Thunder - I just have him here because I don't have a Geomathmech Final Sigma, which could also take this place for a generic Synchro 12. Onimaru can swing for 6k though, which is funnier.
• x1 Swordsoul Supreme Sovereign - Chengying, Baronne de Fleur, Icejade Gymir Aegirine - Just a bunch of generic Synchro 10s you can Summon during your opponent's turn.
• x1 Adamancipator Risen - Dragite - It's a free Spell/Trap negate. You'll never run out of WATER monsters in your GY.
• x1 PSY-Framelord Omega - Funny card to Summon during your opponent's turn.
• x1 White Aura Whale - A Raigeki that can keep your set up going.
• x1 Desert Locusts - Another funny card that can be Summoned alongside your aforementioned PSY-Framelord Omega.
Honorable mentions
• Ruddy Rose Dragon - It reads "nuke your opponent's board and GY while setting up your banish pile during their turn".
• Crystron Quariongandrax - Another funny card that can be Summoned during your opponent's turn.
• Angel of Zera - Funny beatstick.
• Buster Dragon - Funny floodgate for monster Types.
• Hyper Psychic Riser - Literally just Skill Drain.
• Cyber Slash Harpie Lady - Just a free bounce each turn.
• Vulcan the Divine - Same thing with the aforementioned card.
• Metaphys Horus - A free permanent negate for a face-up card.
Final thoughts, uhhh... YEP Joel. Goodluck with the upcoming Synchro Festival, again, to y'all, I suppose. As per usual, if you have any questions or thoughts, feel free to express them down in the comments and I'll respond to them as soon as I possibly can.