Games like Fish Companions
Games like Fish Companions include Cast n Chill, Spirit City: Lofi Sessions, WEBFISHING, Cornerpond, and Fish to Dish: Idle Sushi. We matched them by the tags players give Fish Companions on Steam (Desktop Companion, Creature Collector, Idler, Fishing, and Indie): closest matches first, and among equally close ones the better-known games.

Cast n Chill
Shared: Idler · Fishing · Creature Collector

Spirit City: Lofi Sessions
Shared: Desktop Companion · Creature Collector · Relaxing

WEBFISHING
Shared: Fishing · Creature Collector · Multiplayer

Cornerpond
Shared: Desktop Companion · Idler · Creature Collector

Fish to Dish: Idle Sushi
Shared: Desktop Companion · Idler · Creature Collector

Tiny Pasture
Shared: Idler · Creature Collector · Desktop Companion

Slime Rancher 2
Shared: Relaxing · Creature Collector · Singleplayer

Cat Goes Fishing
Shared: Fishing · Indie · 2D

Fischer's Fishing Journey
Shared: Idler · Creature Collector · Fishing

Chillquarium
Shared: Creature Collector · Idler · Fishing

Maltese's Fluffy Onsen
Shared: Desktop Companion · Idler · Casual

Stardew Valley
Shared: Multiplayer · Relaxing · Indie

DAVE THE DIVER
Shared: Relaxing · Casual · Fishing

How to Train Your Cock
Shared: Desktop Companion · Idler · Relaxing

Rusty's Retirement
Shared: Idler · Desktop Companion · Relaxing

MyVoiceZoo
Shared: Creature Collector · Idler · Casual

Birdwatching Notebook
Shared: Creature Collector · Idler · Desktop Companion

Mushroom Nook
Shared: Desktop Companion · Creature Collector · Idler

My Little Life
Shared: Desktop Companion · Idler · Creature Collector

Mini Cozy Room: Lo-Fi
Shared: Idler · Desktop Companion · Relaxing

ABZU
Shared: Relaxing · Atmospheric · Indie

Ropuka's Idle Island
Shared: Desktop Companion · Idler · Relaxing

Keep on Mining!
Shared: Idler · Relaxing · Indie

Joyquarium
Shared: Creature Collector · Idler · Fishing