Otterly Lost Fish Locations: All 22 Fish Guide

Otterly Lost (Steam app 3861710, full release September 23, 2026) hides 22 collectible fish across its map, and finding every one earns the "A Pocket Full of Fish" achievement. This guide is based on the community guide "All Fish Locations" by FlagsAreBad, posted September 27, 2026 on Steam. These routes come from that player-made guide, not official documentation, so treat them as community findings rather than guaranteed official answers.

All 22 Fish Locations at a Glance

The table below lists each fish in the same numbered order used by the FlagsAreBad Steam guide. The original guide pairs each number with a map image; those images are not reproduced here, so open the guide for visual references.

Official screenshot · Source: Steam store

Gated Fish: What to Prepare First

Two fish are locked behind resource costs according to the SteamAH write-up dated September 28, 2026, which mirrors the FlagsAreBad guide:

• Common Perch requires 40 shells to open its sealed cave in the north-eastern sea.
• Sockeye Salmon requires 20 ore to unlock its cave at the bottom of a northern waterfall, plus a fully upgraded rock to break the wall after unlocking.

As a personal tip (not a game mechanic): saving shells and ore as you explore makes the endgame collection much smoother than hunting them at the last minute. Verify these costs in your own game, since they come from a community guide and patch details can change.

Unlocking the Floating Isle Koi

All four koi (Ki Sanke, Benigoi, Kigoi, and Sanke) sit in the waters around the Floating Isle, which you cannot reach until you restore the owl's egg. Per the FlagsAreBad guide, you save the egg from the lake and return it to the top of the nearby tree, just west of Thalor the Turtle. Once that's done, sweep the isle's southern bush, eastern bamboo, central coral, and northern seaweed for the four koi.

Easy-to-Miss Spots Worth Knowing

A few locations commonly trip players up:

• The Common Carp icon on the map is hard to see unless fully zoomed in, per the SteamAH guide — don't assume it's absent.
• The Northern Pike cave entrance is very small; it's easy to swim past.
• The Moon Jelly requires committing to a long trip through the tide cave — don't turn back early.
• For the Common Bream, the guide notes an easier route around the back of the western island if you lack movement upgrades.

FAQ

How many fish are in Otterly Lost? 22, per the FlagsAreBad guide, all tied to the "A Pocket Full of Fish" achievement.

What resources do I need before hunting? The community guide lists 40 shells (Common Perch) and 20 ore plus a fully upgraded rock (Sockeye Salmon). Confirm in-game.

How do I reach the Floating Isle? Return the owl's egg from the lake to the tree west of Thalor the Turtle, per the FlagsAreBad guide.

Are these locations verified for the current patch? They reflect guides posted September 27–28, 2026, shortly after the September 23, 2026 release; no patch-specific verification is claimed here.

Source Checklist

If you're tracking your own progress, a simple personal checklist (yours to use, not a game feature) of the 22 names above works well for marking off each catch.