No reason to not have fish stack in your inventory - lets be real PA, the people playing now are long term vets, we paid you hundreds for all the quality of life stuff, theres no reason my entire inventory is full of puffer fish and requiem sharks. Stack em, devise a new way to milk us of cash.

Cheers.

Get the fish tank (plus 50 slots).  Granted my Fisher has 192 slots, but if I toss the green fish, and use the fish tank I can go for 3 hours active fishing or 13 hours afk fishing and not run out of room.  My rod breaks first.  Before the relic shards stacked I would occasionally run outta room if I was AFK fishing for more than 12 hours, since the stacking relic shards I haven't had a rod not break before I ran outta room.  I usually end up with 150 slots filled plus the fish tank filled, and I have a lot of junk in my fisher's inventory.