In this Core Keeper Fishing Guide, I'll tell you everything you need to know about fishing, what kind of fish you can catch, and where to catch them!
Core Keeper Fishing Guide - How to Fish
Fishing is fairly straightforward in Core Keeper -- at least at first.
First, you'll need to get a Fishing Rod. If you can't find one, you'll have to upgrade to the Tin Tier by exploring The Clay Caves biome and mining some Tin. Once you have a Fishing Rod, you'll simply need to look for blue sparkles over water with fish underneath it -- this is where you'll have to land your bobber.
Fish spawns will give you different fish depending on which biome you're in. Keep in mind that they don't last forever; eventually, they'll run out of fish and you'll have to move somewhere else.
I strongly recommend that you pay attention to the sound. The noises you hear combined with the on-screen cues will help you quickly learn the pattern of a particular fish.
Once you catch a fish, you can choose to eat it raw, cook it, or sell it.

The Core Keeper Fishing UI explained
The Core Keeper Fishing Ui is fairly easy to understand -- there are only 4 parts to it.
- Rod indicator - This shows whether you're reeling in a fish or letting the line run out.
- Fish Progress - This shows your progress towards catching a fish. You'll have to pull the fish to the left of the bar. If it reaches the right side of the bar, the fish escapes.
- Line Tension - This shows how close your line is to snapping. If this bar fills up, the line breaks and the fish escapes. Reeling in a fish increases Line Tension, and reeling in a fish while it's running rapidly increases Line Tension.
- Running Fish - A fish that is running will be colored red. Do not reel it in if you can avoid it -- you'll quickly build up Line Tension and risk the fish getting away!
How Fishing Patterns Work
Most fishing games you've played have some kind of pattern for each fish. Core Keeper is no different -- each fish has a pattern split between "pulling" (trying to run away) and "resting" (tired out and can't pull). These patterns loop, so a fish might do a short pull, short rest, short pull, long rest, and then loop back around to the beginning of the pattern.
Recognizing these patterns is essential to catching tougher fish. I've come up with a simple system to denote how long a Pull or Rest is to give you an idea of how each fish behaves.
Note: this pattern system isn't perfect. The patterns are here to give you a rough idea of how a fish behaves. Eventually, you'll be able to recognize what fish you're reeling in simply by recognizing its pattern!
Fishing Patterns
- P - Short Pull
- PP - Medium Pull
- PPP - Long Pull
- R - Short Rest
- RR - Medium Rest
- RRR - Long Rest
Core Keeper Fishing Guide - List of Fish
I'll wrap this Core Keeper Fishing Guide with a list of all of the fish I've found in the game. Bear in mind that this may not include every fish -- some of them are very rare and have a fairly low chance of appearing.
Dirt Biome Fish
These are the fish you can find in the Dirt biome, Core Keeper's starting area.
Orange Cave Guppy
- Pattern - PPP RRR
- +10 Food
- +2.1 health every sec for 20 sec
- Can be cooked
Blue Cave Guppy
- Pattern - PP RR PP RRR
- +10 Food
- +2.2 health every sec for 20 sec
- Can be cooked
Rock Jaw (Uncommon)
- Pattern - P R P R P RR
- +11 Food
- +2.5 health every sec for 20 sec
- Can be cooked
Gem Crab (Rare)
- Pattern - P R P RR
- +10 Food
- +3.1 health every sec for 20 sec
- Can be cooked
Green Kelp
- Valuable Item
Rusty Spoon
- Valuable Item
The Clay Caves Biome Fish
These are the fish you can find in The Clay Caves biome in Core Keeper.
Yellow Blister Head
- Pattern - P R PP RR
- +10 Food
- +2.6 health every sec for 20 sec
- Can be cooked
Green Blister Head
- Pattern - P R PP RR
- +10 Food
- +2.5 health every sec for 20 sec
- Can be cooked
Devil Worm (Uncommon)
- Pattern - P R
- +10 Food
- +3.0 health every sec for 20 sec
- Can be cooked
Vampire Eel (Rare)
- Pattern - P R PP RRR
- +11 Food
- +3.5 health every sec for 20 sec
- Can be cooked
The Forgotten Ruins Biome Fish
These are the fish you can find in The Forgotten Ruins biome in Core Keeper.
Dagger Fin
- Pattern - PP RR
- +11 Food
- +3.9 health every sec for 20 sec
- Can be cooked
Pink Palace Fish (Uncommon)
- Pattern - PP RR PPP RRR
- +11 Food
- +3.9 health every sec for 20 sec
- Can be cooked
Teal Palace Fish (Uncommon)
- Pattern - PP RR PPP RRR
- +11 Food
- +4.0 health every sec for 20 sec
- Can be cooked
??? (Rare)
- Unknown Fish
Crown Squid (Epic)
- Pattern - ?
- +10 Food
- +5.0 health every sec for 20 sec
- Can be cooked
via C Mccune in the comments
Azeos' Wilderness Biome Fish
These are the fish you can find in the Azeos' Wilderness biome in Core Keeper.
Emerald Feather Fish
- Pattern - P RRR
- +10 Food
- +4.5 health every sec for 20 sec
- Can be cooked
Azure Feather Fish
- Pattern - PP RRR P RR
- +10 Food
- +4.1 health every sec for 20 sec
- Can be cooked
Spirit Veil (Uncommon)
- Pattern - P R PP RR
- +9 Food
- +4.7 health every sec for 20 sec
- Can be cooked
Astral Jelly
- Pattern - ?
- +10 Food
- +5.2 health every sec for 20 sec
- Can be cooked
via @mcrKirei on Twitter

The Mould Dungeon Fish
These are the fish you can find in The Mould Dungeon in Core Keeper and the surrounding area. The water must have a white mold tint around it to count as being part of The Mould Dungeon.
Mold Shark
- Pattern - P R P R P RR
- +10 Food
- +4.8 health every sec for 20 sec
- Can be cooked
Rot Fish (Uncommon)
- Pattern - PPP RRR
- +11 Food
- -22 health for 20 sec
- Can be cooked
The Sunken Sea Fish
You can find the following fish in The Sunken Sea biome:
Bottom Tracer
- Pattern - PP RR PP RRR
- +10 food
- +5.8 health every sec for 20 sec
- Can be cooked
Silver Dart (Uncommon)
- Pattern - P R P RR
- +11 food
- +5.5 health every sec for 20 sec
- Can be cooked
Golden Dart (Uncommon)
- Pattern - ?
- +11 food
- +5.7 health every sec for 20 sec
- Can be cooked
Pink Coralotl (Rare)
- Pattern - ?
- +11 food
- +7.0 health every sec for 20 sec
- Can be cooked
White Coralotl (Rare)
- Pattern - PPP RR PP R P RRR
- +9 food
- +5.8 health every sec for 20 sec
- Can be cooked
That's it for our Core Keeper Fishing guide! Check out more guides below: