Koi:

The Koi will be a new fish that will appear naturally in rivers. They won't have loot, but they can be caught in buckets. Below are their variants.

Yambuki Ogon

Benigoi

Platinum Ogon

Karasu

Kumonryu

Kohaku

Shiro Utsuri

Taisho Sanke

Kin Ki Utsuri (rare variant)

Hi Utsuri (rare variant)

Betta Fishes:

The Betta fish will be a new small fish that will appear naturally in swamps. They won't have any loot either, but they can be caught in buckets. Below are their variants.

Blue Betta

Brown Betta

Yellow Betta

Red Betta

Darkblue Betta

Green tail Betta

Goldy Betta

Cake Betta

Pale Betta

Blue top Betta

Peacock Betta

Black Betta

Blueberry Betta

Chinese high fin Sharks

These small relatives of sharks will appear naturally in the Mangrove Swamp. They will be somewhat rare to see, and when killed, they will drop their large fin. Below are their variants.

Pale

Capuccino

New 1.5.0 Fish

Neon Tetra

The Neon Tetra will appear in bodies of water in the jungles. It will be so weak that it will die in one hit and will have no loot. However, it can be caught in a bucket to feed the arowanas.

Arowanas

Arowanas will also appear in bodies of water in the jungles. They can be bred using Neon Tetra buckets; one will release its eggs, which will take 15 to 20 minutes to hatch. Two to four baby arowanas can hatch. Only the babies can be caught in buckets.

Green

Silver

Baby

Lionfish

The Lionfish appears in all deep oceans. They are poisonous to the touch and upon death will release their spines, which can be used to transform a water bottle into a poison potion. II. They can be caught in buckets.

Red

Orange

???

To learn about this fish, you must register it in the guide.

New Biome!

The Stone Ocean will be a new biome found in deep oceans. The entire seabed will be made of stone and dead coral. Additionally, stone pipes that emit steam will appear. These can only be obtained in this biome and cannot be crafted.

Plants

Cattails

Cattails will be purely decorative plants that will appear naturally in rivers, swamps, and mangrove swamps. They can be planted both in and out of the water. And although they cannot be propagated with bone meal, breaking one can yield two plants with a low probability.

Duckweeds

Duckweeds will be plants that generate on the water in Swamplands and Mangrove Swamps. They can only be placed on water or mud blocks. They also have the same duplication feature as cattails. They will not have collision, making them good decorative plants.

Items

Shark Fin

This item will be dropped by the Chinese High Fin Shark when it dies. It can be used to make soup.

Shark fin Soup

It is said that this soup has certain effects on people. Find out what its properties are.

New 1.5.0 Items

Lionfish Spines

These spines will be dropped by the lionfish. And you can, using the brewing stand, transform a bottle of water into Poison Potion II.

Arowana eggs

They are released by an arowana after mating. They float on the water to hatch. Hatching takes 15 to 20 minutes, and up to four arowanas can hatch from a single clutch.

Fishplorer's Guide

It is made with a book and a cod (it can also be a salmon or even a shark fin). By reading it, you will learn everything about the generation of fish in the world and their functions.

Deep Fishplorer's Guide

Upon encountering a creature from the deep, you can interact with it using the Fishplorer's Guide to update it. Once updated, it will display information about creatures from the deep. (Currently, there is only one creature from the deep.)

"KOI" By Just D 938 - (Do not distribute to other sites, and if mentioned, leave the original link to the complement.)

-It does not require any Experiments to be enabled and will not disable achievements.

clarification

I want to mention something. Currently, the add-on isn't compatible with Vibrant Visuals, but I'll make it compatible in the future. Also, the new bucket system in this update has a bug that can't be fixed. If you put any bucket from the add-on into a Dispenser block, it won't release anything when activated, and the bucket will disappear. I'm letting you know so you don't lose your fish. Unfortunately, there's currently no way to fix it, and I apologize for that. End of notice, and thank you.

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"KOI" by Just D 1.5.0 [achievements friendly]