The main creature is a very tall muscular female Fish-man https://onepiece.fandom.com/wiki/Fish-Men with elements from several different species;
The head should have the face like Catarina https://onepiece.fandom.com/wiki/Catarina_Devon Devon,
The eyes of Dosun https://onepiece.fandom.com/wiki/Dosun the hammerhead shark fish-man,
The nose of Arlong the Saw https://onepiece.fandom.com/wiki/Arlong a sawshark fish-man,
Four catfish whiskers like Sugamichi and Warazane https://onepiece.fandom.com/wiki/Su.....i_and_Warazane
Curly https://onepiece.fandom.com/wiki/Curly_Dadan Dadan's hair style,
The main creature is a very tall muscular female Fish-man https://onepiece.fandom.com/wiki/Fish-Men with elements from several different species;
The head should have the face like Catarina https://onepiece.fandom.com/wiki/Catarina_Devon Devon,
The eyes of Dosun https://onepiece.fandom.com/wiki/Dosun the hammerhead shark fish-man,
The nose of Arlong the Saw https://onepiece.fandom.com/wiki/Arlong a sawshark fish-man,
Four catfish whiskers like Sugamichi and Warazane https://onepiece.fandom.com/wiki/Su.....i_and_Warazane
Curly https://onepiece.fandom.com/wiki/Curly_Dadan Dadan's hair style,
Four arms https://oproleplaying.fandom.com/wi.....Four_Arm_Tribe with flipper-like hands think Batman Returns Danny Divito's https://batman.fandom.com/wiki/The_Penguin_(Burtonverse) Penguin, Flying Fish Riders https://onepiece.fandom.com/wiki/Rosy_Life_Riders wings,
A sea turtle shell like Pekoms's https://onepiece.fandom.com/wiki/Pekoms Kame Kame no Mi https://onepiece.fandom.com/wiki/Kame_Kame_no_Mi and plastrons or plastra like Banchi https://onepiece.fandom.com/wiki/Banchi
Flippers on her pelvis https://en.wikipedia.org/wiki/Pelvic_fin between the legs,
The legs are like The Longleg Tribe https://onepiece.fandom.com/wiki/Longleg_Tribe members with webbed Frog-like feet of Yokozuna https://onepiece.fandom.com/wiki/Yokozuna
A long eel-like mermaid tail of the Minister of the Left https://onepiece.fandom.com/wiki/Mi.....er_of_the_Left that ends in a stingray fin and stinger like Kuroobi https://onepiece.fandom.com/wiki/Kuroobi
and mounted above the tail https://oproleplaying.fandom.com/wi.....el:_Nuckelavee and below the turtle shell is the lure which has the basic One Piece female character https://onepiece.fandom.com/wiki/Ca.....ale_Characters body type,
The hair on its head is nearly a full Big Giant Squid King https://onepiece.fandom.com/wiki/King_(Giant_Squid) with 2 tentacles as like pigtails,
On the head are 2 anglerfish escas https://en.wikipedia.org/wiki/Anglerfish like Nuru https://onepiece.fandom.com/wiki/Nuru
the lure https://en.wikipedia.org/wiki/Aggre....._an_attractant is human/mermaid https://onepiece.fandom.com/wiki/Merfolk looking from the front but from the back you see all her weird fishy parts like the tendrils of Surume https://onepiece.fandom.com/wiki/Surume a shark dorsal fin like Dellinger https://onepiece.fandom.com/wiki/Dellinger scales, etc...

Now I've been meaning to update the design a bit but these updates are major and I've got no references for like combining the arms and wings on the main monster with them being more like Mezo Shoji (障しょう子じ目め蔵ぞう Shōji Mezō?), also known as the Tentacle Hero: Tentacole https://myheroacademia.fandom.com/wiki/Mezo_Shoji from MHA, and moving the lure from the creature's back to her stomach like Holed'em https://onepiece.fandom.com/wiki/Holed%27em or Mizerka https://onepiece.fandom.com/wiki/Mizerka

Four arms https://oproleplaying.fandom.com/wi.....Four_Arm_Tribe with flipper like hands think Batman Returns Danny Divito's https://batman.fandom.com/wiki/The_Penguin_(Burtonverse) Penguin,