The Fish Tank will not accept my bundle item
A grey or inactive icon can mean you are looking at the remote checklist, visiting the wrong scroll, or playing a different bundle set. Work from the least costly checks before catching another fish.
Get to the physical scroll
Use the inventory bundle button at the river to look up what is missing; keep the fish in your backpack and go to the Community Center to deliver it. The remote view is a reference. The Fish Tank bundle group appears after you finish one bundle elsewhere, so if you have only just deciphered the first Crafts Room scroll, complete an available bundle first. A fully restored room with a working aquarium represents a later state, not an empty place to start donating.
Read the bundle name and open slots
Stand at the Fish Tank scroll, select a colored bundle and compare the fish name with the named empty entry. A Walleye belongs in the standard Night Fishing Bundle, not River Fish even if you caught it in a river. A higher-quality fish can satisfy an ordinary fish slot. For requirements that specify a minimum quality, read the stars as well as the item; a normal-quality item cannot satisfy a gold requirement. If none of your expected icons appear, check whether you chose remixed bundles at farm creation.
Separate the bundle reward from the room repair
An individual finished bundle offers its own reward when completed. Finishing every bundle in the Fish Tank triggers the room reward after the day ends: the Glittering Boulder by the Mines is removed and the panning introduction becomes available. Sleep and visit the Mountain before deciding that the repair failed. If you finished the room without claiming an individual reward, check the small bag beside the Junimo Hut in the Community Center.